The invention discloses a test method for noise reduction earphone filter calculation. The test method comprises the following steps: a noise calibration step; a passive testing step: driving a soundbox to send out a frequency sweeping noise signal through a frequency sweeping signal, collecting a sound signal sent out by the sound box, converting the sound signal into an electric signal, and calculating a frequency response curve of the sound box; meanwhile, collecting the sweep frequency signal, calculating a noise phase curve by combining the collected sound signal emitted by the sound box, and calculating a passive frequency response and a passive phase; a horn parameter testing step: collecting sound signals emitted by the horn and converting the sound signals into electric signals,calculating a cavity horn frequency response curve, and calculating a phase curve of the cavity horn at the same time; a microphone parameter test step; and a calculation step: calculating ideal frequency response data and phase data of the target filter. According to the test method for noise reduction earphone filter calculation, data conversion is automatically carried out, a testing process issimplified, a product development period is shortened, and the product development efficiency is improved.