The utility model relates to the technical field of photo frames, in particular to an easy-to-splice photo frame profile structure which comprises a plate body, the four edges of one side of the plate body are provided with protruding structures, and the plate body is provided with a frame mechanism in a matched mode. According to the photo frame, a photo is placed into the plate body, then the acrylic plate is embedded into the plate body, the clamping plate is clamped into any sliding groove in a sliding mode, and then the protruding strip-shaped structures on one sides of the four supporting plates are manually pulled towards the adjacent grooves, so that openings of the clamping grooves are enlarged, and the edges of the plate body can enter the clamping grooves conveniently; then one sides of the supporting plates are loosened, the supporting plates are automatically restored due to elasticity of the supporting plates, so that the four supporting plates abut against one another, meanwhile, the protruding strip-shaped structures on one sides of the four supporting plates abut against the protruding structures on the edges of the plate bodies in the adjacent clamping grooves, the plate bodies and the four supporting plates are fixed, manual splicing by a user is facilitated, and the splicing efficiency is improved. And the frame part of the photo frame can be disassembled and replaced by replacing the support plate.