The invention discloses a folding vehicle frame which is arranged between a front wheel support and a back wheel support. The folding vehicle frame comprises a front vehicle frame, two back vehicle frame which are symmetrically arranged, first adapting pieces, second adapting pieces and a connecting rod. The side wall of the front vehicle frame extends downwards out of a pivot portion, the tail end of the front vehicle is located on the upper portion of the front ends of the back vehicle frames, and the pivot portion is connected with the front ends of back vehicle frames. One end of each first connecting piece is connected with the tail end of the front vehicle frame in a pivot mode. One end of each second connecting piece is connected with the front end of each back vehicle frame, and the other end of the second connecting piece is connected with the middle portion of the first connecting piece in a pivot mode. Two ends of the connecting rod are respectively connected with the other ends of the two first connecting pieces. The folding vehicle frame has the advantages of being stable in structure, saving storage space and being convenient to carry.