@Rudy Thank you very much Rudy. I downloaded it. Many thanks. Actually, my one still doesn't work. And i tried another one. The programming can be uploaded. Many thanks for your kindly help.
I downed the CH9102 (in a Chinese web). But my board still doesn't work..... It always shows that "a fatal error occured: failed to connect ESP 32: Time out waiting for packet header". I tried several times. And almose spend the whole day. May i know which board you select? And which web you downloaded the CH9102? Mang thanks if you could bring infomation to me.