The invention discloses a mounting base for an ultra-short-focus laser projector. The mounting base comprises an adjusting plate, a fixing plate, an ultra-short-focus laser projector body, a servo motor, a mounting plate, push rod motors, fixing blocks, telescopic springs, adjusting blocks, stop blocks, baffle, limiting springs, connecting rods, a connecting block, a sliding block and a threaded rod, wherein a placing groove is formed in the top of the adjusting plate, the fixing plate is arranged in the placing groove, and the fixing plate is slidably connected with the placing groove. According to the mounting base, through the arrangement of the limiting springs, limiting blocks move in limiting grooves and adjusting grooves, the limiting blocks extrude the adjusting blocks, the telescopic springs generate a reverse elastic force, the adjusting blocks push the limiting blocks in the changing position, the limiting blocks are released between the limiting blocks and the adjusting grooves, and the limiting blocks between the fixing plate and the adjusting plate are released according to the same principle. The structure is simple, the operation is convenient, the projector can bequickly installed and disassembled, the time is saved, and the working efficiency is improved.