Punching-free mounting box

The utility model provides a punching-free installation box, and relates to the distribution box technology field, the punching-free installation box comprises an installation box body, a bracket and a punching-free installation structure, the installation box body is arranged in the bracket, the back surface of the bracket is provided with the punching-free installation structure, the punching-free installation structure comprises a moving groove, an adjusting groove and an L-shaped fixing member, a first auxiliary groove is formed in the lower portion of the interior of the moving groove, a second auxiliary groove matched with the first auxiliary groove in position is formed in the upper portion of the interior of the moving groove, a first moving block is arranged in the first auxiliary groove, a second moving block is arranged in the second auxiliary groove, and the first moving block and the second moving block are both connected with the L-shaped fixing piece; the punching-free installation box is compo