diff --git a/pending_bookings.php b/pending_bookings.php
index 794b9e4..f7d19ff 100644
--- a/pending_bookings.php
+++ b/pending_bookings.php
@@ -725,7 +725,14 @@ try {
                     slotDiv.className = `time-slot ${isPast ? 'past' : ''} ${isBooked ? 'booked' : 'available'}`;
                     slotDiv.textContent = timeString;
                     slotDiv.dataset.time = timeString;
-                    slotDiv.onclick = () => selectTimeSlot(submissionId, timeString);
+                    
+                    // 只有可用的时间段才添加点击事件
+                    if (!isPast && !isBooked) {
+                        slotDiv.onclick = () => selectTimeSlot(submissionId, timeString);
+                    } else {
+                        // 禁用不可点击的时间段
+                        slotDiv.style.cursor = 'not-allowed';
+                    }
                     
                     timeGrid.appendChild(slotDiv);
                 }