diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpUriRequestConverter.java b/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpUriRequestConverter.java
index af2fef46..28a7ce5e 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpUriRequestConverter.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpUriRequestConverter.java
@@ -58,7 +58,7 @@ public class HttpUriRequestConverter {
     }
 
     private HttpUriRequest convertHttpUriRequest(Request request, Site site, Proxy proxy) {
-        RequestBuilder requestBuilder = selectRequestMethod(request).setUri(request.getUrl());
+        RequestBuilder requestBuilder = selectRequestMethod(request).setUri(UrlUtils.fixIllegalCharacterInUrl(request.getUrl()));
         if (site.getHeaders() != null) {
             for (Map.Entry<String, String> headerEntry : site.getHeaders().entrySet()) {
                 requestBuilder.addHeader(headerEntry.getKey(), headerEntry.getValue());
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/utils/UrlUtils.java b/webmagic-core/src/main/java/us/codecraft/webmagic/utils/UrlUtils.java
index 87a6a567..c61483a3 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/utils/UrlUtils.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/utils/UrlUtils.java
@@ -43,7 +43,7 @@ public class UrlUtils {
             if (url.startsWith("?"))
                 url = base.getPath() + url;
             URL abs = new URL(base, url);
-            return encodeIllegalCharacterInUrl(abs.toExternalForm());
+            return abs.toExternalForm();
         } catch (MalformedURLException e) {
             return "";
         }
@@ -53,12 +53,17 @@ public class UrlUtils {
      *
      * @param url url
      * @return new url
+     * @deprecated
      */
     public static String encodeIllegalCharacterInUrl(String url) {
-        //TODO more charator support
         return url.replace(" ", "%20");
     }
 
+    public static String fixIllegalCharacterInUrl(String url) {
+        //TODO more charator support
+        return url.replace(" ", "%20").replaceAll("#+", "#");
+    }
+
     public static String getHost(String url) {
         String host = url;
         int i = StringUtils.ordinalIndexOf(url, "/", 3);
diff --git a/webmagic-core/src/test/java/us/codecraft/webmagic/downloader/HttpUriRequestConverterTest.java b/webmagic-core/src/test/java/us/codecraft/webmagic/downloader/HttpUriRequestConverterTest.java
new file mode 100644
index 00000000..15902e86
--- /dev/null
+++ b/webmagic-core/src/test/java/us/codecraft/webmagic/downloader/HttpUriRequestConverterTest.java
@@ -0,0 +1,31 @@
+package us.codecraft.webmagic.downloader;
+
+import org.junit.Test;
+import us.codecraft.webmagic.Request;
+import us.codecraft.webmagic.Site;
+import us.codecraft.webmagic.utils.UrlUtils;
+
+import java.net.URI;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author code4crafter@gmail.com
+ *         Date: 2017/7/22
+ *         Time: 下午5:29
+ */
+public class HttpUriRequestConverterTest {
+
+    @Test(expected = IllegalArgumentException.class)
+    public void test_illegal_uri() throws Exception {
+        HttpUriRequestConverter httpUriRequestConverter = new HttpUriRequestConverter();
+        httpUriRequestConverter.convert(new Request("http://bj.zhongkao.com/beikao/yimo/##"), Site.me(), null);
+    }
+
+    @Test
+    public void test_illegal_uri_correct() throws Exception {
+        HttpUriRequestConverter httpUriRequestConverter = new HttpUriRequestConverter();
+        HttpClientRequestContext requestContext = httpUriRequestConverter.convert(new Request(UrlUtils.fixIllegalCharacterInUrl("http://bj.zhongkao.com/beikao/yimo/##")), Site.me(), null);
+        assertThat(requestContext.getHttpUriRequest().getURI()).isEqualTo(new URI("http://bj.zhongkao.com/beikao/yimo/#"));
+    }
+}
\ No newline at end of file