diff --git a/src/components/canvas/CanvasEstimate.jsx b/src/components/canvas/CanvasEstimate.jsx
index 2f49ea5..88f3a1e 100644
--- a/src/components/canvas/CanvasEstimate.jsx
+++ b/src/components/canvas/CanvasEstimate.jsx
@@ -241,7 +241,7 @@ export default function CanvasEstimate() {
                                     </div>
                                     <div className="special-note-check-item">
                                         <div className="d-check-box light">
-                                            <input type="checkbox" id="ch03" />
+                                            <input type="checkbox" id="ch03" disabled checked/>
                                             <label htmlFor="ch03">出力制御の時 (中三電以外)</label>
                                         </div>
                                     </div>
diff --git a/src/styles/_reset.scss b/src/styles/_reset.scss
index 799796b..6c65fec 100644
--- a/src/styles/_reset.scss
+++ b/src/styles/_reset.scss
@@ -779,6 +779,12 @@ input[type=text]{
         transform: translate(7.75px,4.5px) rotate(45deg);
         -ms-transform: translate(7.75px,4.5px) rotate(45deg);
     }
+    input[type=checkbox]:disabled + label::before{
+        background-color: #FAFAFA;
+    }
+    input[type=checkbox]:disabled + label::after{
+        border-color: #999;
+    }
     &.pop{
         label{
             &:before{