Folder with safe self-locking structure

The utility model discloses a folder with a safe self-locking structure. The folder with the safe self-locking structure comprises a left box for the folder, a right box for the folder, and a handle hinged with the free end of the right box for the folder through a handle shaft, wherein one sides of the left box for the folder and the right box for the folder are hinged through a folding rotating shaft. The folder is characterized in that an ejector rod rotation shaft is arranged at the free end of the left box for the folder; an ejector rod is vertically arranged in a manner of being vertical to the axis of the ejector rod rotation shaft; an arc groove is formed in the wall body at the lower part of the handle; and when the left box and the right box for the folder are buckled on the handle in an overlapping manner, the inner face of the arc groove is abutted against the top end of the ejector rod to achieve a self-locking effect, and the axis of the handle shaft and the axis of the ejector rod rotation shaf