diff --git a/backend/src/graphql/arg/SearchContributionsFilterArgs.ts b/backend/src/graphql/arg/SearchContributionsFilterArgs.ts
index e256fa663..29446f1df 100644
--- a/backend/src/graphql/arg/SearchContributionsFilterArgs.ts
+++ b/backend/src/graphql/arg/SearchContributionsFilterArgs.ts
@@ -1,18 +1,24 @@
+import { IsBoolean, IsPositive, IsString } from 'class-validator'
 import { Field, ArgsType, Int } from 'type-graphql'
 
 import { ContributionStatus } from '@enum/ContributionStatus'
+import { isContributionStatusArray } from '@/graphql/validator/ContributionStatusArray'
 
 @ArgsType()
 export class SearchContributionsFilterArgs {
   @Field(() => [ContributionStatus], { nullable: true, defaultValue: null })
+  @isContributionStatusArray()
   statusFilter?: ContributionStatus[] | null
 
   @Field(() => Int, { nullable: true })
+  @IsPositive()
   userId?: number | null
 
   @Field(() => String, { nullable: true, defaultValue: '' })
+  @IsString()
   query?: string | null
 
   @Field(() => Boolean, { nullable: true })
+  @IsBoolean()
   noHashtag?: boolean | null
 }
diff --git a/backend/src/graphql/resolver/ContributionResolver.test.ts b/backend/src/graphql/resolver/ContributionResolver.test.ts
index 167edfe74..52dd04339 100644
--- a/backend/src/graphql/resolver/ContributionResolver.test.ts
+++ b/backend/src/graphql/resolver/ContributionResolver.test.ts
@@ -2792,11 +2792,28 @@ describe('ContributionResolver', () => {
         resetToken()
       })
 
+      it('throw error for invalid ContributionStatus in statusFilter array', async() => {
+        const { errors: errorObjects } = await query({
+          query: adminListContributions,
+          variables: {
+            statusFilter:["INVALID_STATUS"]
+          }
+        })
+        expect(errorObjects).toMatchObject([
+          {
+            message: "Variable \"$statusFilter\" got invalid value \"INVALID_STATUS\" at \"statusFilter[0]\"; Value \"INVALID_STATUS\" does not exist in \"ContributionStatus\" enum.",
+            extensions: {
+              code: "BAD_USER_INPUT"
+            },
+          },
+        ])
+      })
+
       it('returns 17 creations in total', async () => {
         const {
           data: { adminListContributions: contributionListObject },
         } = await query({
-          query: adminListContributions,
+          query: adminListContributions          
         })
         expect(contributionListObject.contributionList).toHaveLength(17)
         expect(contributionListObject).toMatchObject({
diff --git a/backend/src/graphql/schema.ts b/backend/src/graphql/schema.ts
index 18214861f..caca1b5bc 100644
--- a/backend/src/graphql/schema.ts
+++ b/backend/src/graphql/schema.ts
@@ -12,8 +12,9 @@ export const schema = async (): Promise<GraphQLSchema> => {
     resolvers: [path.join(__dirname, 'resolver', `!(*.test).{js,ts}`)],
     authChecker: isAuthorized,
     scalarsMap: [{ type: Decimal, scalar: DecimalScalar }],
+    emitSchemaFile: true,
     validate: {
-      validationError: { target: false },
+      validationError: { target: true },
       skipMissingProperties: true,
       skipNullProperties: true,
       skipUndefinedProperties: false,
diff --git a/backend/src/graphql/validator/ContributionStatusArray.ts b/backend/src/graphql/validator/ContributionStatusArray.ts
new file mode 100644
index 000000000..da718f70c
--- /dev/null
+++ b/backend/src/graphql/validator/ContributionStatusArray.ts
@@ -0,0 +1,21 @@
+import { registerDecorator, ValidationOptions } from 'class-validator'
+
+import { ContributionStatus } from '@enum/ContributionStatus'
+
+export function isContributionStatusArray(validationOptions?: ValidationOptions) {
+  // eslint-disable-next-line @typescript-eslint/ban-types
+  return function (object: Object, propertyName: string) {
+    registerDecorator({
+      name: 'isContributionStatusArray',
+      target: object.constructor,
+      propertyName,
+      options: validationOptions,
+      validator: {
+        validate(value: ContributionStatus[]): boolean {
+          const validValues = Object.values(ContributionStatus)
+          return value.every((item) => validValues.includes(item))
+        },
+      },
+    })
+  }
+}
diff --git a/backend/src/seeds/graphql/queries.ts b/backend/src/seeds/graphql/queries.ts
index 3dda2633c..949ed86d7 100644
--- a/backend/src/seeds/graphql/queries.ts
+++ b/backend/src/seeds/graphql/queries.ts
@@ -251,6 +251,7 @@ export const adminListContributions = gql`
     $statusFilter: [ContributionStatus!]
     $userId: Int
     $query: String
+    $noHashtag: Boolean
   ) {
     adminListContributions(
       currentPage: $currentPage
@@ -259,6 +260,7 @@ export const adminListContributions = gql`
       statusFilter: $statusFilter
       userId: $userId
       query: $query
+      noHashtag: $noHashtag
     ) {
       contributionCount
       contributionList {