The invention discloses a plug-in grabbing jig. The plug-in grabbing jig comprises a fixing part, a pushing butting part, a connecting part and a plurality of elastic parts. The pushing butting part is provided with an outer edge and can be relatively close to or far away from the fixing part in the sliding direction. One end of the connecting part is connected with the fixing part, and the otherend of the connecting part is connected with the pushing butting part. The elastic parts are annularly arranged on the outer edge of the pushing butting part. Each elastic part comprises a connectingsection, a grabbing section and a first pushing section. The connecting section of each elastic part is connected with the fixing part, and the connecting sections are opposite to the grabbing sections. One sides, facing the connecting part, of first pushing sections are provided with pushing inclined surfaces, and the first pushing sections are located between the connecting sections and the grabbing sections. Acute angles are formed between the normal directions and the sliding directions of the pushing inclined surfaces. The outer edge of the pushing butting part can be pushed against the pushing inclined surfaces of the first pushing sections so as to drive the grabbing sections of the elastic parts to retract or expand outwards.