The invention discloses a measuring cylinder placing rack with a scale magnifying function. The measuring cylinder placing rack comprises a base, vertical rods, a measuring cylinder and a magnifying lens, wherein containing marks are formed on the front end surface of the measuring cylinder; a suction cup is arranged on the bottom end surface of the measuring cylinder; two vertical rods are vertically and symmetrically arranged at the left side and the right side of the measuring cylinder; the two vertical rods are oppositely arranged on the base in parallel at an interval; linear sliding rails are arranged on the inner side end surfaces of the two vertical rods; a clamping part is connected with the inside of each linear sliding rail in a sliding manner; each clamping part is arranged in the corresponding sliding rail in a manner of sliding up and down; the magnifying lens is fixedly connected and clamped between the two clamping parts, and is correspondingly arranged in front of the measuring cylinder; and two electric telescopic frames are also symmetrically arranged at two sides of the lower end surface of the base. According to the measuring cylinder placing rack, the containing mark of the measuring cylinder is magnified through the magnifying lens, so that a worker can more accurately carry out liquid adding and observation in an experiment.