Mysql blocking problem causes

1. Deadlock situation has been ruled out.
2.show processlist; nearly a thousand query processes are blocked.
3. Extract the two most awaited SQL statements, which take nearly 1 second to execute individually.
Please help me analyze what else needs to be analyzed. It is blocked three or four times a month.

Reply content:

1. Deadlock situation has been ruled out.
2.show processlist; nearly a thousand query processes are blocked.
3. Extract the two most awaited SQL statements, which take nearly 1 second to execute individually.
Please help me analyze what else needs to be analyzed. It is blocked three or four times a month.

Consider slow query, enable slow query log analysis and SQL to find the reason