The invention relates to the field of detection tools, in particular to a clamp for detecting component profile outline. The clamp for detecting the component profile outline comprises a base and a clamping block, and the base is connected with the clamping block to form a clamping cavity; the base is provided with a first matching surface, and the first matching surface is matched with the profile of a part in the design standard; and the clamping cavity is used for containing a to-be-detected component. Through the clamp provided by the invention, detection of the outline of the component isrealized, in the operation process, only the reference edge of the component needs to be abutted against a detection tool, thereby facilitating reduction of detection errors; in addition, the detection of the component profile outline can be realized only by plugging a filler gauge; compared with the prior art, the clamp has the advantages that the operation is more convenient, the clamp is little influenced by the external environment and human operation factors, the detection result is reliable, high repeatability is achieved, and detection of the components in batches can be realized easily and rapidly, the cost is saved, and the period is shortened.