Q: google chrome has a malware, please help me remove

Help here >  Remove pop-ups, redirects, and other malware - Google Chrome

Download this program which was written by Thomas Reed, a long time poster. The program will do the work for you which makes it easy.

Malwarebytes Anti-Malware for Mac      10.8 and later

What should I do if Malwarebytes Anti-Malware for Mac didn't solve my problem?

If the above doesn't fix the problem, try running this program and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor.  Please use copy and paste as screen shots can be hard to read. On the screen with Options, please open Options and check the bottom 2 boxes before running. Click “Share Report” button in the toolbar, select “Copy to Clipboard” and then paste into a reply. This will show what is running on your computer. No personal information is shown.

Etrecheck – System Information