The invention discloses a method for redundancy switching output signals of dual-redundancy avionics equipment and aims to achieve redundancy switching with logic reliability and high anti-interference capability. According to the following technical scheme, the dual-redundancy switching avionics equipment presets certain redundancy logical timing sequences for deciding main control power for a local machine and another machine respectively according to a power-on self-checking result and a periodical self-checking result; redundancy state values of the local machine and another machine are interacted with each other, then two state values of the local machine and another machine are logically switched for judgement, and the state output signals of the local machine and state input signalsof another machine are subjected to exclusive-or logic operation in the local machine to generate state change signals; the rising edges of the state change signals are determined to control main control signals of the local machine or another machine, judgment results of the exclusive-or logic operation are used as bases for determining whether each redundancy working state of the local machineand another machine is normal or abnormal, the main control power of the local machine and another machine is determined, and the redundancy local machine or another machine which obtains the main control power achieves effective outputting by controlling the main control signals.