diff --git a/apps/web/src/app/university/SearchResultsContent.tsx b/apps/web/src/app/university/SearchResultsContent.tsx
index 877c229a..81415e86 100644
--- a/apps/web/src/app/university/SearchResultsContent.tsx
+++ b/apps/web/src/app/university/SearchResultsContent.tsx
@@ -11,6 +11,7 @@ import {
 import CloudSpinnerPage from "@/components/ui/CloudSpinnerPage";
 import FloatingUpBtn from "@/components/ui/FloatingUpBtn";
 import UniversityCards from "@/components/university/UniversityCards";
+import { COUNTRY_CODE_MAP } from "@/constants/university";
 import { type CountryCode, type LanguageTestType, RegionEnumExtend } from "@/types/university";
 import RegionFilter from "./RegionFilter";
 import SearchBar from "./SearchBar";
@@ -32,9 +33,12 @@ const SearchResultsContent = () => {
     const countries = searchParams.getAll("countryCode");
 
     // URL에서 전달된 국가 목록을 기본으로 사용
-    const filteredCountries = countries as CountryCode[];
+    const filteredCountries = countries.filter((country): country is CountryCode =>
+      Object.hasOwn(COUNTRY_CODE_MAP, country),
+    );
+    const hasFilterParams = Boolean(lang) || filteredCountries.length > 0;
 
-    if (!lang || !countries) {
+    if (!hasFilterParams) {
       return {
         isTextSearch: true,
         searchText: text,
diff --git a/apps/web/src/app/university/[homeUniversity]/search/_ui/SearchPageContent.tsx b/apps/web/src/app/university/[homeUniversity]/search/_ui/SearchPageContent.tsx
index 80050f0a..0b533495 100644
--- a/apps/web/src/app/university/[homeUniversity]/search/_ui/SearchPageContent.tsx
+++ b/apps/web/src/app/university/[homeUniversity]/search/_ui/SearchPageContent.tsx
@@ -54,13 +54,14 @@ const SearchPageContent = ({ homeUniversitySlug }: SearchPageContentProps) => {
   // 필터 검색
   const onSubmit: SubmitHandler<SearchFormData> = (data) => {
     const queryParams = new URLSearchParams();
+    const availableCountryCodeSet = new Set(availableCountries.map(([code]) => code as CountryCode));
 
     if (data.languageTestType) {
       queryParams.append("languageTestType", data.languageTestType);
     }
 
     [data.country1, data.country2, data.country3].forEach((code) => {
-      if (code) {
+      if (code && availableCountryCodeSet.has(code)) {
         queryParams.append("countryCode", code);
       }
     });
diff --git a/apps/web/src/app/university/list/[homeUniversityName]/SearchResultsContent.tsx b/apps/web/src/app/university/list/[homeUniversityName]/SearchResultsContent.tsx
index 8bba124d..537c6b66 100644
--- a/apps/web/src/app/university/list/[homeUniversityName]/SearchResultsContent.tsx
+++ b/apps/web/src/app/university/list/[homeUniversityName]/SearchResultsContent.tsx
@@ -11,6 +11,7 @@ import {
 import CloudSpinnerPage from "@/components/ui/CloudSpinnerPage";
 import FloatingUpBtn from "@/components/ui/FloatingUpBtn";
 import UniversityCards from "@/components/university/UniversityCards";
+import { COUNTRY_CODE_MAP } from "@/constants/university";
 import { type CountryCode, type HomeUniversityName, type LanguageTestType, RegionEnumExtend } from "@/types/university";
 import RegionFilter from "../../RegionFilter";
 import SearchBar from "../../SearchBar";
@@ -36,9 +37,12 @@ const SearchResultsContentInner = ({ homeUniversityName }: SearchResultsContentI
     const countries = searchParams.getAll("countryCode");
 
     // URL에서 전달된 국가 목록을 기본으로 사용
-    const filteredCountries = countries as CountryCode[];
+    const filteredCountries = countries.filter((country): country is CountryCode =>
+      Object.hasOwn(COUNTRY_CODE_MAP, country),
+    );
+    const hasFilterParams = Boolean(lang) || filteredCountries.length > 0;
 
-    if (!lang || !countries) {
+    if (!hasFilterParams) {
       return {
         isTextSearch: true,
         searchText: text,
diff --git a/apps/web/src/app/university/search/PageContent.tsx b/apps/web/src/app/university/search/PageContent.tsx
index b6e8966a..25dd7acf 100644
--- a/apps/web/src/app/university/search/PageContent.tsx
+++ b/apps/web/src/app/university/search/PageContent.tsx
@@ -48,6 +48,7 @@ const SchoolSearchForm = ({ homeUniversitySlug }: SchoolSearchFormProps) => {
 
   const onSubmit: SubmitHandler<SearchFormData> = (data) => {
     const queryParams = new URLSearchParams();
+    const availableCountryCodeSet = new Set(availableCountries.map(([code]) => code as CountryCode));
 
     if (data.searchText) {
       queryParams.append("searchText", data.searchText);
@@ -57,11 +58,15 @@ const SchoolSearchForm = ({ homeUniversitySlug }: SchoolSearchFormProps) => {
     }
 
     [data.country1, data.country2, data.country3].forEach((code) => {
-      if (code) {
+      if (code && availableCountryCodeSet.has(code)) {
         queryParams.append("countryCode", code);
       }
     });
 
+    if (data.regions && data.regions.length > 0) {
+      data.regions.forEach((region) => queryParams.append("region", region));
+    }
+
     const queryString = queryParams.toString();
     router.push(`/university/${homeUniversitySlug}?${queryString}`);
   };
diff --git a/apps/web/src/constants/university.ts b/apps/web/src/constants/university.ts
index d5248acd..5a89afe3 100644
--- a/apps/web/src/constants/university.ts
+++ b/apps/web/src/constants/university.ts
@@ -7,7 +7,7 @@ import {
   type TestScoreInfo,
 } from "@/types/university";
 
-export const REGIONS_SEARCH = ["유럽권", "미주권", "아시아권"] as const;
+export const REGIONS_SEARCH = ["유럽권", "미주권", "아시아권", "중국권"] as const;
 
 export const REGIONS_KO = ["유럽권", "미주권", "아시아권", "중국권"];