The invention provides a protection method for satellite borne phased array TR (Transmitter/Receiver) component single event upset. The method comprises the following specific process that: S1: a wave control system carries out calculation to obtain the state data of each register of the TR component, carrying out odd verifying coding, and the coded data is sent to the TR component; S2: a register odd verifying module arranged in the TR component carries out the odd verifying on the received data; and S3: when the wave control system detects that a verifying result output by the certain TR component is wrong, current work is immediately interrupted, an emergency data anomaly maintenance mechanism is started, i.e., the wave control system schedules resources to immediately calculate and configure failed TR component register data. The method owns a capability of automatically monitoring the single event upset, can automatically trigger superior equipment (wave control system) to refresh the TR component, so that the refreshing strategy of the superior equipment (wave control system) is more flexible, and pertinence is higher.