diff --git a/src/main/java/com/hobak/happinessql/domain/record/api/RecordController.java b/src/main/java/com/hobak/happinessql/domain/record/api/RecordController.java
index df87ff6..d378edd 100644
--- a/src/main/java/com/hobak/happinessql/domain/record/api/RecordController.java
+++ b/src/main/java/com/hobak/happinessql/domain/record/api/RecordController.java
@@ -3,6 +3,7 @@
 
 
 import com.hobak.happinessql.domain.record.application.RecordCalendarListService;
+import com.hobak.happinessql.domain.record.application.RecordCalendarDetailService;
 import com.hobak.happinessql.domain.record.application.RecordCreateService;
 import com.hobak.happinessql.domain.record.application.RecordPagingService;
 import com.hobak.happinessql.domain.record.converter.RecordConverter;
@@ -31,6 +32,7 @@ public class RecordController {
     private final RecordCreateService recordCreateService;
     private final RecordPagingService recordPagingService;
     private final RecordCalendarListService recordCalendarListService;
+    private final RecordCalendarDetailService recordCalendarDetailService;
 
     @Operation(summary = "행복 기록 추가", description = "행복 기록을 생성합니다.")
     @PostMapping(consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
@@ -66,6 +68,13 @@ public DataResponseDto<List<RecordCalendarResponseDto>> getRecordCalenderList(@R
         return DataResponseDto.of(responseDtos, "행복 달력을 성공적으로 조회했습니다.");
     }
 
+    @Operation(summary = "행복 달력 상세 조회", description = "패스 파라미터로 받은 날짜에 해당하는 모든 행복 기록을 조회합니다.")
+    @GetMapping("/calendar/{date}")
+    public DataResponseDto<List<RecordResponseDto>> getRecordCalenderList(@PathVariable String date, @RequestParam Long userId) {
+        List<RecordResponseDto> responseDtos = recordCalendarDetailService.getRecords(date, userId);
+        return DataResponseDto.of(responseDtos, "행복 달력을 성공적으로 조회했습니다.");
+    }
+
 
 
 
diff --git a/src/main/java/com/hobak/happinessql/domain/record/application/RecordCalendarDetailService.java b/src/main/java/com/hobak/happinessql/domain/record/application/RecordCalendarDetailService.java
new file mode 100644
index 0000000..f43c0bd
--- /dev/null
+++ b/src/main/java/com/hobak/happinessql/domain/record/application/RecordCalendarDetailService.java
@@ -0,0 +1,37 @@
+package com.hobak.happinessql.domain.record.application;
+
+import com.hobak.happinessql.domain.record.converter.RecordConverter;
+import com.hobak.happinessql.domain.record.domain.Record;
+import com.hobak.happinessql.domain.record.dto.RecordResponseDto;
+import com.hobak.happinessql.domain.record.repository.RecordRepository;
+import com.hobak.happinessql.domain.user.application.UserFindService;
+import com.hobak.happinessql.domain.user.domain.User;
+import com.hobak.happinessql.global.util.TimeConverter;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.util.List;
+
+
+@Service
+@RequiredArgsConstructor
+public class RecordCalendarDetailService {
+
+    private final RecordRepository recordRepository;
+    private final UserFindService userFindService;
+
+    public List<RecordResponseDto> getRecords(String date, Long userId) {
+        LocalDate dt = TimeConverter.stringToLocalDate(date);
+        User user = userFindService.findUserById(userId);
+        List<Record> records = findRecordsBy(dt, user);
+        return RecordConverter.toRecordResponseDtos(records);
+    }
+
+    private List<Record> findRecordsBy(LocalDate date, User user) {
+        LocalDateTime startOfDay = date.atStartOfDay();
+        LocalDateTime endOfDay = date.atTime(23, 59);
+        return recordRepository.findAllByCreatedAtBetweenAndUser(startOfDay, endOfDay, user);
+    }
+}
diff --git a/src/main/java/com/hobak/happinessql/domain/record/application/RecordCalendarListService.java b/src/main/java/com/hobak/happinessql/domain/record/application/RecordCalendarListService.java
index d04abe2..843286d 100644
--- a/src/main/java/com/hobak/happinessql/domain/record/application/RecordCalendarListService.java
+++ b/src/main/java/com/hobak/happinessql/domain/record/application/RecordCalendarListService.java
@@ -29,35 +29,40 @@ public class RecordCalendarListService {
 
     public List<RecordCalendarResponseDto> getHappinessAverages(Integer month, Integer year, Long userId) {
         User user = userFindService.findUserById(userId);
+        year = (year == null) ? LocalDate.now().getYear() : year;
+        month = (month == null) ? LocalDate.now().getMonthValue() : month;
 
-        if(year == null) {
-            year = LocalDate.now().getYear();
-        }
+        List<Record> records =  findRecordsBy(month, year, user);
 
-        if(month == null) {
-            month = LocalDate.now().getMonthValue();
-        }
+        Map<LocalDate, List<Integer>> happinessIndexesByDate = calculateHappinessIndexes(records);
+        List<RecordCalendarResponseDto> responseDtos = createResponseDtos(happinessIndexesByDate);
 
+        return responseDtos.stream()
+                .sorted(Comparator.comparing(RecordCalendarResponseDto::getDate))
+                .collect(Collectors.toList());
+    }
+
+    private List<Record> findRecordsBy(Integer month, Integer year, User user) {
         LocalDateTime startOfMonth = YearMonth.of(year, month).atDay(1).atStartOfDay();
         LocalDateTime endOfMonth = YearMonth.of(year, month).atEndOfMonth().atTime(23, 59);
+        return recordRepository.findAllByCreatedAtBetweenAndUser(startOfMonth, endOfMonth, user);
+    }
 
-        List<Record> records = recordRepository.findAllByCreatedAtBetweenAndUser(startOfMonth, endOfMonth, user);
-
-        Map<LocalDate, List<Integer>> happinessIndexesByDate = records.stream()
+    private Map<LocalDate, List<Integer>> calculateHappinessIndexes(List<Record> records) {
+        return records.stream()
                 .collect(Collectors.groupingBy(
                         record -> record.getCreatedAt().toLocalDate(),
                         Collectors.mapping(Record::getHappiness, Collectors.toList())
                 ));
+    }
 
+    private List<RecordCalendarResponseDto> createResponseDtos(Map<LocalDate, List<Integer>> happinessIndexesByDate) {
         List<RecordCalendarResponseDto> responseDtos = new ArrayList<>();
         happinessIndexesByDate.forEach((date, happinessIndexes) -> {
             Integer averageHappiness = Calculator.getAverage(happinessIndexes);
             RecordCalendarResponseDto dto = RecordConverter.toRecordCalendarResponseDto(date, averageHappiness);
             responseDtos.add(dto);
         });
-
-        return responseDtos.stream()
-                .sorted(Comparator.comparing(RecordCalendarResponseDto::getDate))
-                .collect(Collectors.toList());
+        return responseDtos;
     }
 }
diff --git a/src/main/java/com/hobak/happinessql/global/util/TimeConverter.java b/src/main/java/com/hobak/happinessql/global/util/TimeConverter.java
new file mode 100644
index 0000000..96ab9a2
--- /dev/null
+++ b/src/main/java/com/hobak/happinessql/global/util/TimeConverter.java
@@ -0,0 +1,19 @@
+package com.hobak.happinessql.global.util;
+
+import com.hobak.happinessql.global.exception.GeneralException;
+
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeParseException;
+
+public class TimeConverter {
+    public static final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
+
+    public static LocalDate stringToLocalDate(String dateString) {
+        try {
+            return LocalDate.parse(dateString, formatter);
+        } catch (DateTimeParseException e) {
+            throw new GeneralException("Invalid date format. Please use yyyy-MM-dd.");
+        }
+    }
+}