The present invention discloses a test system of a formation evaluation logger circuit board. The test system of the formation evaluation logger circuit board overcomes the insufficient that at present, simple tests, such as insulation test, short-circuit test, etc., only can be carried out on a formation evaluation logger, and a better test effect can not be obtained, and comprises a test circuit and an analog circuit. The test circuit supplies electric energy to a modulator-demodulator, measures and displays a voltage and a current provided to a to-be-tested circuit board, and receives the work state of the to-be-tested circuit board. The analog circuit provides a work signal for simulating the formation evaluation logger to the to-be-tested circuit board. The test system of the formation evaluation logger circuit board of the embodiment of the application can carry out single plate function test on a circuit of the formation evaluation tool, can accelerate the overall joint debugging progress of the circuit during the instrument manufacture process, and can provide a circuit test environment during the instrument maintenance process.