Due to some policy issues, this article is described in English.

Sometime after I started tor, the following error popped up：

Tor launcher. Tor exited during startup. This might be due to an error in your torrc file, a bug in Tor or another program on your system, or faulty hardware. Until you fix the underlying problem and restart Tor, Tor Browser will not start.

At first I thought it was a network issue and made sure I turned off the system's firewall and related security software, but the above prompt still exists. In desperation, I ended up reinstalling the OS, but that still didn't fix the above problem either. However, I've noticed that firefox doesn't receive any effects, so I doubt it's tor causing the problem. After downloading the standalone tor program and running it, I found an error message: 

[warn] Warning from libevent: evsig_init_: socketpair: 你的主机中的软件中止了一个已建立的连接。

So I determined that there must be some software present that is affecting the operation of tor, and after disabling the firewall, and security software, the problem still occurs. So I suspected that there was something wrong with the proxy, so I turned off the proxy software, and finally the problem stopped. Finally, I found the culprit: Proxifier, which was probably conflicting with tor after a recent update.

This problem has been bothering me for about 2 months, but now it's finally solved. I also referred to the tor forum for some solutions, but none of them were solved, but it did remind me of some possibilities, here are those references:

 

After careful troubleshooting, I found that the problem was not caused by the proxifier upgrade, but by enabling the “Handle direct connections” function in the proxifier, and now everything is back to normal after disabling this function.