Because the shortcut key of my screenshot tool is Ctrl+q , and the shortcut key of docker desktop exit is also Ctrl+q, when I press Ctrl+q, docker desktop exits, and then when I enter the docker command in the console,

burst this line of error

error during connect: This error may indicate that the docker daemon is not running.: Get "http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.24/containers/json": open //./pipe/docker_engine: The system cannot find the file specified.

Solution:
reopen docker desktop

when the color of the icon in the lower-left corner is the same as that shown in the picture, it proves that docker operates normally
then I go to CMD and enter the docker command

to see that there is no error