The invention discloses a method for preventing relay jittering, and in the process that the coil of the relay is sucked by an electric contact, after the relay coil is electrified for the time of t1,the relay coil is powered off and is kept for the time of t2, and then the power supply to the coil of the relay is restored; wherein the time t1 is 60% -80% of the original suction time t5 of the relay, and the time t2 is 40% -20% of the original suction time t5 of the relay. According to the invention, the short transient power loss of the relay coil is achieved in the contact suction process,and the rebound amplitude and times of the contact in the suction process can be effectively reduced without influencing the normal touch suction control, so that the mechanical vibration abrasion ofthe contact is effectively reduced, and the adverse effect of the electric arc is eliminated; and the experiment shows that the working reliability of the relay can be improved, the service life of the relay is prolonged, and the relay is suitable for industrial popularization and application.