Blood vessel detection instrument for health beauty salon

The blood vessel detection instrument comprises a machine body and a protruding block, a containing plate is fixed to one side of the machine body, and a sliding groove is formed in the containing plate; a sliding groove is formed in the base, a sliding block is embedded in the sliding groove, a threaded groove is formed in one side of the sliding groove, a positioning block is connected to one side of the sliding block, a first connecting block is fixed to one side of the positioning block, and a bolt is connected between the first connecting block and the threaded groove. The blood vessel detection instrument is provided with a pushing positioning block, the positioning block drives a sliding block to move along a sliding groove, when the positioning block moves, a bolt is driven to move, and when the positioning block moves to one side of a printer, the bolt is rotated and slides along a first connecting block in a threaded mode; and when the bolt slides into the threaded groove in a threaded mode, the fir