The utility model provides a mould for making cement test sample, it includes frame, a sample preparation section of thick bamboo, spiral capping device and piston sample suppression device, suppression passageway in the middle of a sample preparation section of thick bamboo is equipped with, top are equipped with the internal thread, and a preparation section of thick bamboo is fixed in the frame, spiral capping device includes telescopic cylinder, electric turntable and gland, the top in the frame is fixed to telescopic cylinder's cylinder body, the utility model has the advantages of reasonable design, the cement test sample preparation is convenient, adopts polyethylene film to hold in the palm the end, prevents effectively that fluorescence analyzed experiment in -process sample from falling the sediment condition, has fine practical value.