The invention discloses an automatic splicing and positioning carrier for frames. The automatic splicing and positioning carrier for frames comprises a carrying plate, wherein a plurality of splicing and positioning mechanisms are arranged on the carrying plate; each splicing and positioning mechanism comprises a pressing mechanism and a pushing mechanism; the pressing mechanisms can press adjacent frame bars; the pushing mechanisms push the adjacent frame bars to be close to one another; each pressing mechanism comprises a pneumatic toggle clamp; a group of pressing plates are arranged at the front end of each pneumatic toggle clamp; the front ends of the pressing plates are separately connected with pressure head screws capable of pressing the frame bars from above; each pushing mechanism comprises a pushing cylinder, an outer limiting block and an inner limiting block; a push rod is arranged at the front end of each pushing cylinder; each outer limiting block is arranged at the front end of the corresponding push rod; and each pushing cylinder pushes the corresponding push rod so as to drive the corresponding outer limiting block to push the two corresponding adjacent frame bars, and each outer limiting block and the corresponding inner limiting block are clamed tightly to implement tight attachment of connection positions of the two corresponding adjacent frame bars. The frame bars only need to be placed at approximate positions, automatic positioning for splicing of the frames is realized, the operation difficulty is reduced, the production efficiency is improved, the degree of automation is high, splicing and positioning of frame bars with different sizes are realized, and the universality is high.