diff --git a/AMSS_NCKU_source/prolongrestrict_cell.f90 b/AMSS_NCKU_source/prolongrestrict_cell.f90
index c1efb36..8469f94 100644
--- a/AMSS_NCKU_source/prolongrestrict_cell.f90
+++ b/AMSS_NCKU_source/prolongrestrict_cell.f90
@@ -1956,11 +1956,11 @@
 
   real*8,dimension(3) :: CD,FD
   real*8 :: tmp_yz(extc(1), 6)      ! 存储整条 X 线上 6 个 Y 轴偏置的 Z 向插值结果
-  real*8 :: tmp_xyz_line(extc(1))   ! 存储整条 X 线上完成 Y 向融合后的结果
-  real*8 :: v1, v2, v3, v4, v5, v6
-  integer :: ic, jc, kc, ix_offset,ix,iy,iz,jc_min,jc_max
-  real*8 :: res_line
-  real*8 :: tmp_z_slab(extc(1), extc(2))  ! 分配在 k 循环外
+  real*8 :: tmp_xyz_line(-2:extc(1))   ! 包含 X 向 6 点模板访问所需下界
+  real*8 :: v1, v2, v3, v4, v5, v6
+  integer :: ic, jc, kc, ix_offset,ix,iy,iz,jc_min,jc_max,ic_min,ic_max
+  real*8 :: res_line
+  real*8 :: tmp_z_slab(-2:extc(1), -2:extc(2))  ! 包含 Y/X 向模板访问所需下界
   if(wei.ne.3)then
      write(*,*)"prolongrestrict.f90::prolong3: this routine only surport 3 dimension"
      write(*,*)"dim = ",wei
@@ -2073,24 +2073,26 @@
 
   call symmetry_bd(3,extc,func,funcc,SoA)
      ! 对每个 k（pz, kc 固定）预计算 Z 向插值的 2D 切片
-jc_min = minval(ciy(jmino:jmaxo))
-jc_max = maxval(ciy(jmino:jmaxo))
-
-do k = kmino, kmaxo
-    pz = piz(k); kc = ciz(k)
-    ! --- Pass 1: Z 方向，只算一次 ---
-    do iy = jc_min-3, jc_max+3   ! 仅需的 iy 范围
-        do ii = imini-3, imaxi+3  ! 仅需的 ii 范围
-            tmp_z_slab(ii, iy) = sum(WC(:,pz) * funcc(ii, iy, kc-2:kc+3))
-        end do
-    end do
-
-    do j = jmino, jmaxo
-        py = piy(j); jc = ciy(j)
-        ! --- Pass 2: Y 方向 ---
-        do ii = imini-3, imaxi+3
-            tmp_xyz_line(ii) = sum(WC(:,py) * tmp_z_slab(ii, jc-2:jc+3))
-        end do
+jc_min = minval(ciy(jmino:jmaxo))
+jc_max = maxval(ciy(jmino:jmaxo))
+ic_min = minval(cix(imino:imaxo))
+ic_max = maxval(cix(imino:imaxo))
+
+do k = kmino, kmaxo
+    pz = piz(k); kc = ciz(k)
+    ! --- Pass 1: Z 方向，只算一次 ---
+    do iy = jc_min-2, jc_max+3   ! 仅需的 iy 范围（对应 jc-2:jc+3）
+        do ii = ic_min-2, ic_max+3  ! 仅需的 ii 范围（对应 cix-2:cix+3）
+            tmp_z_slab(ii, iy) = sum(WC(:,pz) * funcc(ii, iy, kc-2:kc+3))
+        end do
+    end do
+
+    do j = jmino, jmaxo
+        py = piy(j); jc = ciy(j)
+        ! --- Pass 2: Y 方向 ---
+        do ii = ic_min-2, ic_max+3
+            tmp_xyz_line(ii) = sum(WC(:,py) * tmp_z_slab(ii, jc-2:jc+3))
+        end do
         ! --- Pass 3: X 方向 ---
         do i = imino, imaxo
             funf(i,j,k) = sum(WC(:,pix(i)) * tmp_xyz_line(cix(i)-2:cix(i)+3))
@@ -2351,8 +2353,8 @@ end do
 
   real*8,dimension(3) :: CD,FD
 
-  real*8 :: tmp_xz_plane(extf(1), 6) 
-  real*8 :: tmp_x_line(extf(1))
+  real*8 :: tmp_xz_plane(-1:extf(1), 6)
+  real*8 :: tmp_x_line(-1:extf(1))
   integer :: fi, fj, fk, ii, jj, kk
 
   if(wei.ne.3)then
@@ -2445,7 +2447,7 @@ do k = kmino, kmaxo
         ! 优化点 1: 显式展开 Z 方向计算，减少循环开销
         ! 确保 ii 循环是最内层且连续访问
         !DIR$ VECTOR ALWAYS
-        do ii = 1, extf(1)
+        do ii = -1, extf(1)
             ! 预计算当前 j 对应的 6 行在 Z 方向的压缩结果
             ! 这里直接硬编码 jj 的偏移，彻底消除一层循环
             tmp_xz_plane(ii, 1) = C1*(funff(ii,fj-2,fk-2)+funff(ii,fj-2,fk+3)) + &
@@ -2470,7 +2472,7 @@ do k = kmino, kmaxo
 
         ! 优化点 2: 同样向量化 Y 方向压缩
         !DIR$ VECTOR ALWAYS
-        do ii = 1, extf(1)
+        do ii = -1, extf(1)
             tmp_x_line(ii) = C1*(tmp_xz_plane(ii, 1) + tmp_xz_plane(ii, 6)) + &
                             C2*(tmp_xz_plane(ii, 2) + tmp_xz_plane(ii, 5)) + &
                             C3*(tmp_xz_plane(ii, 3) + tmp_xz_plane(ii, 4))