Relay security protection system and method applicable to programmable switching adapter

The invention relates to a relay security protection system and method applicable to a programmable switching adapter, wherein the system comprises an FPG, a relay array and a single chip microcomputer, wherein the pin of the single chip microcomputer is connected to the base of a first audion; a first audion transmitter is grounded; a collector is connected with a power supply through two voltage-dividing resistors connected in series; the grid of a field-effect tube is connected between the two voltage-dividing resistors; the drain is connected to the positive end of a relay coil; the source is connected to the power supply; the pin of an FPGA is connected with the base of a second audion; a second audion transmitter is grounded; and the collector is connected to the cathode of the relay coil. By means of the technical scheme, damage on a circuit system due to the uncontrollable state when the FPGA is electrified can be avoided; and the structure is simple and effective. 种应用于程控转接适配器的继电器安全保护系统和方法，其中所述系统包括，FP