Medical magnifier convenient to overhaul

The invention discloses a medical magnifier convenient to overhaul, which comprises an annular fixing frame, a first connecting piece and a pupil distance adjusting box, two rotary connecting lugs are fixedly mounted on the other side of the annular fixing frame, and the first connecting piece is rotatably mounted between the rotary connecting lugs through a sleeve pipe and an insertion pipe; the sleeve pipe is inserted into the open hole of the first connecting piece from the rotary connecting lug on one side, the insertion pipe is inserted into the sleeve pipe from the rotary connecting lug on the other side, and an expansion pipe is arranged at the tail end of the sleeve pipe. The medical magnifying glass convenient to overhaul is provided with a rotary connecting lug, a first connecting piece, a sleeve tube, an expansion tube and an insertion tube, the expansion tube of the sleeve tube is gradually extruded outwards when the insertion tube continuously stretches into the sleeve tube, and then the sleeve t