The invention relates to a wireless signal measurement system. The wireless signal measurement system comprises a wireless device to be measured, a radiating antenna group, a device accompanied for measurement, a testing master controller and a signal propagation and simulation device, wherein the wireless device to be measured and the radiating antenna group are located in a first closed space, the device accompanied for measurement and the testing master controller are located in a second closed space, and the signal propagation and simulation device is located between the first closed space and the second closed space. Both the first closed space and the second closed space have the conditions of a free space. The signal propagation and simulation device is used for simulating a wireless signal propagation mode, conducts channel simulation processing on the data sent by the wireless device to be measured and received by the radiating antenna group and then transmits the data to the device accompanied for measurement, or the signal propagation and simulation device conducts channel simulation processing on the data sent by the device accompanied for measurement and then sends the data to the wireless device to be measured through the radiating antenna group. The wireless signal measurement system can simulate different propagation modes including reflection, diffraction, perpendicular incidence and the like of signals transmitted or received by the wireless device to be measured and replaces an actual testing and verification place, and the testing performance and testing efficiency of the signal measurement system can be improved.