diff --git a/ft-app/app/routers/positions.py b/ft-app/app/routers/positions.py
index 3893d2f..a16e63a 100644
--- a/ft-app/app/routers/positions.py
+++ b/ft-app/app/routers/positions.py
@@ -80,6 +80,7 @@ def add_position(
     round_id: int,
     open_price: int = Form(...),
     amp_threshold: int = Form(...),
+    lock_price: str = Form(""),
     hands: int = Form(1),
     db: Session = Depends(get_db),
 ):
@@ -87,12 +88,12 @@ def add_position(
     if not r or r.status != "active":
         return RedirectResponse("/positions/?error=轮次不存在或已结束", status_code=303)
 
-    lock_price = open_price + amp_threshold
+    final_lock = int(lock_price) if lock_price else open_price + amp_threshold
     p = Position(
         round_id=r.id,
         open_price=open_price,
         amp_threshold=amp_threshold,
-        lock_price=lock_price,
+        lock_price=final_lock,
         hands=hands,
         opened_at=date.today(),
     )
@@ -102,9 +103,15 @@ def add_position(
 
 
 @router.post("/{position_id}/lock")
-def lock_position(position_id: int, db: Session = Depends(get_db)):
+def lock_position(
+    position_id: int,
+    lock_price: str = Form(""),
+    db: Session = Depends(get_db),
+):
     p = db.query(Position).filter(Position.id == position_id).first()
     if p and p.locked_count < p.hands:
+        if lock_price:
+            p.lock_price = int(lock_price)
         p.locked_count += 1
         db.commit()
     return RedirectResponse("/positions/", status_code=303)
@@ -119,6 +126,19 @@ def unlock_position(position_id: int, db: Session = Depends(get_db)):
     return RedirectResponse("/positions/", status_code=303)
 
 
+@router.post("/{position_id}/update-lock-price")
+def update_lock_price(
+    position_id: int,
+    lock_price: int = Form(...),
+    db: Session = Depends(get_db),
+):
+    p = db.query(Position).filter(Position.id == position_id).first()
+    if p and p.locked_count == 0:
+        p.lock_price = lock_price
+        db.commit()
+    return RedirectResponse("/positions/", status_code=303)
+
+
 @router.post("/{round_id}/close")
 def close_round(
     request: Request,
diff --git a/ft-app/app/templates/positions.html b/ft-app/app/templates/positions.html
index 4cf2b31..7f94803 100644
--- a/ft-app/app/templates/positions.html
+++ b/ft-app/app/templates/positions.html
@@ -145,10 +145,9 @@
       </td>
       <td>
         <div style="display:flex;gap:6px;justify-content:center;">
-          <form method="post" action="/positions/{{ p.id }}/lock" style="display:inline;">
-            <button style="background:var(--warn-bg);color:var(--warn-fg);border:1px solid var(--warn);padding:2px 8px;border-radius:4px;cursor:pointer;font-size:0.75rem;font-weight:600;"
-                    {% if p.locked_count >= p.hands %}disabled style="opacity:0.4;cursor:default;"{% endif %}>锁</button>
-          </form>
+          <button style="background:var(--warn-bg);color:var(--warn-fg);border:1px solid var(--warn);padding:2px 8px;border-radius:4px;cursor:pointer;font-size:0.75rem;font-weight:600;"
+                  {% if p.locked_count >= p.hands %}disabled style="opacity:0.4;cursor:default;"{% endif %}
+                  onclick="showLockConfirm({{ p.id }}, {{ p.lock_price }})">锁</button>
           <form method="post" action="/positions/{{ p.id }}/unlock" style="display:inline;">
             <button style="background:var(--surface);color:var(--sub);border:1px solid var(--border);padding:2px 8px;border-radius:4px;cursor:pointer;font-size:0.75rem;"
                     {% if p.locked_count == 0 %}disabled style="opacity:0.4;cursor:default;"{% endif %}>撤</button>
@@ -181,8 +180,40 @@ function filterContracts() {
     });
   }
 }
+  function showLockConfirm(pid, lockPrice) {
+    document.getElementById('lockPid').value = pid;
+    document.getElementById('lockPriceInput').value = lockPrice;
+    document.getElementById('lockModal').style.display = 'block';
+    document.getElementById('lockModalOverlay').style.display = 'block';
+    document.getElementById('lockPriceInput').focus();
+  }
+  function hideLockModal() {
+    document.getElementById('lockModal').style.display = 'none';
+    document.getElementById('lockModalOverlay').style.display = 'none';
+  }
+  function doLock() {
+    var pid = document.getElementById('lockPid').value;
+    var fd = new FormData();
+    fd.append('lock_price', document.getElementById('lockPriceInput').value);
+    fetch('/positions/' + pid + '/lock', {method:'POST', body:fd})
+      .then(function() { location.reload(); });
+  }
 </script>
 
+<div id="lockModalOverlay" style="display:none;position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:149;" onclick="hideLockModal()"></div>
+<div id="lockModal" style="display:none;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:24px;z-index:150;width:300px;max-width:90vw;">
+  <h3 style="margin-bottom:16px;">确认锁仓</h3>
+  <input type="hidden" id="lockPid">
+  <div class="form-group">
+    <label>锁仓价位</label>
+    <input type="number" id="lockPriceInput" required style="font-size:1rem;text-align:center;font-weight:600;color:var(--danger-fg);">
+  </div>
+  <div style="display:flex;gap:10px;justify-content:flex-end;margin-top:8px;">
+    <button class="btn" style="background:var(--th-bg);color:var(--fg);" onclick="hideLockModal()">取消</button>
+    <button class="btn" style="background:var(--warn);color:#fff;" onclick="doLock()">确认锁仓</button>
+  </div>
+</div>
+
 <div id="confirmOverlay" style="display:none;position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:199;" onclick="hideConfirm()"></div>
 <div id="confirmBox" style="display:none;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:28px 32px;z-index:200;text-align:center;max-width:90vw;">
   <p id="confirmMsg" style="font-size:0.95rem;margin-bottom:20px;"></p>