The present invention discloses a coercive force-based crane wheel pressure testing method. An excitation coil and a detection coil are wound on an U-shaped probe; the U-shaped probe is arranged on a side surface of a track; the excitation coil is excited through using an alternating current excitation mode; the track generates a hysteresis loop under the effect of an excitation electric field; the detection coil detects the hysteresis loop through using a sinusoidal signal mode, so that a complete hysteresis loop can be obtained; and detected magnetic field signals are converted into electric signals through a digital-analog converter; and a corresponding relation between pressure and the measured electric signals is calibrated through testing, so that judgment can be realized. The testing method of the invention is based on a coercive force; the excitation coil and the detection coil are used in combination; the magnetic field is generated through using the alternating current excitation mode; the electric signals are generated through using the change of the magnetic field; measurement and calibration are performed according to the electric signals; and therefore, wheel pressure can be measured accurately. The method has the advantages of high test efficiency and accurate measurement.