Material transferring and positioning device and laser processing system

The invention relates to a material transfer positioning device and a laser processing system. The material transferring and positioning device comprises a transferring and pressing piece which is provided with an adsorption and pressing face and a through hole extending from the adsorption and pressing face in the first preset direction and penetrating through the transferring and pressing piece; the suction mechanism comprises a first suction mechanism or a second suction mechanism; the first suction mechanism surrounds the through hole in the circumferential direction of the through hole, is arranged on the transfer pressing piece and is used for adsorbing the materials to the adsorption pressing face and arranging the materials in the through hole, and the through hole is configured to allow laser to penetrate through so as to weld the materials; or, the second suction mechanism is configured to have a first working state and a second working state, and when the second suction mechanism is in the first wo