A thorough research for some engine synthetic electronic regulator false warning problem is conducted. The self-locking mechanism of the low- pressure air compressor stator vane after the regulating channel false warning is analyzed. And the plan for solving the problem is proposed. The automatic circuit of eliminating the self-locking is designed and realized. Through the installation and the test on the airplane, this electric circuit in the air can relieve the self-locking breakdown caused by the false warning, thus enhancing the system reliability.