diff --git a/.changeset/heavy-sloths-enjoy.md b/.changeset/heavy-sloths-enjoy.md
new file mode 100644
index 000000000..9aa1915d7
--- /dev/null
+++ b/.changeset/heavy-sloths-enjoy.md
@@ -0,0 +1,5 @@
+---
+"@logto/console": patch
+---
+
+Should ignore empty number input box when parsing connector config form.
diff --git a/.changeset/lemon-bears-reply.md b/.changeset/lemon-bears-reply.md
new file mode 100644
index 000000000..c2796a553
--- /dev/null
+++ b/.changeset/lemon-bears-reply.md
@@ -0,0 +1,5 @@
+---
+"@logto/connector-saml": patch
+---
+
+Should use placeholder instead of default value.
diff --git a/packages/connectors/connector-saml/src/constant.ts b/packages/connectors/connector-saml/src/constant.ts
index 83534539b..f52e8cd7b 100644
--- a/packages/connectors/connector-saml/src/constant.ts
+++ b/packages/connectors/connector-saml/src/constant.ts
@@ -145,7 +145,7 @@ export const formItems: ConnectorConfigFormItem[] = [
     type: ConnectorConfigFormItemType.Number,
     label: 'Timeout',
     key: 'timeout',
-    defaultValue: 5000,
+    placeholder: '5000',
   },
   {
     type: ConnectorConfigFormItemType.Json,
diff --git a/packages/console/src/pages/Connectors/components/ConnectorForm/utils.ts b/packages/console/src/pages/Connectors/components/ConnectorForm/utils.ts
index 2cfdefac2..49344a5ef 100644
--- a/packages/console/src/pages/Connectors/components/ConnectorForm/utils.ts
+++ b/packages/console/src/pages/Connectors/components/ConnectorForm/utils.ts
@@ -38,8 +38,13 @@ export const parseFormConfig = (data: ConnectorFormType, formItems: ConnectorCon
         }
 
         if (formItem.type === ConnectorConfigFormItemType.Number) {
+          /**
+           * When set ReactHookForm valueAsNumber to true, the number input field
+           * will return number value. If the input can not be properly converted
+           * to number value, it will return NaN instead.
+           */
           // The number input my return string value.
-          return [key, Number(value)];
+          return Number.isNaN(value) ? null : [key, Number(value)];
         }
 
         if (formItem.type === ConnectorConfigFormItemType.Json) {