Environment-friendly plastic boarding box with locking function

The invention discloses an environment-friendly plastic boarding box with a locking function and belongs to the technical field of packaging. The environment-friendly plastic boarding box with the locking function comprises boarding plates, a base and a top cover. Clamping grooves capable of being buckled with the side walls of the boarding plates are formed in the base and the top cover correspondingly. At least two opposite sides of the base are each provided with one or more sets of lock catches. At least two opposite sides of the top cover are each provided with one or more sets of lock catches. Lock holes corresponding to the lock catches in position are formed in the side walls of the boarding plates. The boarding plates can be locked to the base and the top cover correspondingly through the lock catches and the lock holes. Two folding grooves are formed in the inner side of each of the four corners of the mounted boarding plates and form W-shaped structures. The lock catches are arranged on the top cov