Abstract: In order to ensure the safety of crane beam and the surrounding rock, by application of monitoring technology, load test of the crane beam was carried out. As adding wheel pressure load, the monitoring of observation sections and data analysis were going on at the same time. The monitoring result showed that different levels of response of monitoring points were gotten corresponding to different wheel pressure loads. Except some monitored accumulated values of a few parts exceeded the warning value in excavation, the values of stress and opening at other parts were within the range of the warning values. After unloading, measured values of most measuring points return to the initial state. The test showed that the design of beam structure and the size was reasonable and feasible, and the beam would be stable and safe in the lifting condition.