The invention provides a test method for objectively evaluating the voice quality of a pickup system. The test method mainly comprises the following steps of: testing sound field frequency response through a testing environment or direct calculation according to frequency response test signals; calculating an isostatic compensation function; carrying out isostatic compensation on standard test voice signals; playing the standard test voice signals treated with isostatic compensation, collecting the played voice signals through a pickup device of the pickup system to be tested so as to generate a degraded voice file; comparing the standard test voice signals with degraded voice signals to calculate PESQ value; calculating MOS-LQO value by utilizing a projected curve; and carrying out sample averaging to obtain the test result. The test method overcomes the limitation that the existing test method for objectively evaluating the voice quality can only carry out end-to-end measurement, and the test method can be used for testing the voice quality of the on-site monitoring pickup system.