The invention provides sample preparation equipment for an X-ray fluorescence spectrum micro powder sample and belongs to the technical field of sample preparation tools. The sample preparation equipment is used for preparing the micro powder sample in the X-ray fluorescence spectrum detection process. Aiming at the micro powder which cannot be used for preparing a standard sample, the traditional solution is to mix the micro powder and an adhesive so as to prepare the standard sample. However, new impurities may be introduced in the method, so that an analytical error is increased, and the lower detection limit of the light elements and trace elements is influenced. Therefore, the circular tank filled with the micro powder is extruded out in the adhesive, so that the to-be-detected micro powder is centralized on the middle upper part of the adhesive and is prevented from being diluted; and therefore, the detection precision is improved.