The invention discloses an orthogonal signal frequency-multiplication phase-demodulation logic circuit with filter function, which mainly comprises a filter circuit module and a frequency-multiplication phase-demodulation circuit module, wherein the filter circuit module consists of eight D triggers, six phase inverters, four three-way AND gates and two JK triggers, an input end of the module receives two paths of orthogonal coding signals needing to be filtered respectively, and an output of the module has two paths of orthogonal signals filtered by the corresponding orthogonal coding signals; and the frequency-multiplication phase-demodulation circuit module consists of two XOR gates and five D triggers, an input end of the module receives two paths of signals needing phase demodulationrespectively, and an output end of the module has phase-demodulation signals and fourfold frequency signals. The circuit combines filter and frequency-multiplication phase demodulation, is simple andreliable, can solve the problem of subsequent data processing error caused by signal interference, can be downloaded to a programmable chip such as CPLD or FPGA and the like, saves the space of a circuit board, is convenient to debug, and has reliable performance and utility value.