Vibration damper of circular vibrating screen

The utility model relates to the technical field of vibrating screens, and discloses a vibration damper of a circular vibrating screen, which comprises a screen box, upper supports arranged on two sides of the screen box, lower supports arranged below the upper supports, a base connected to the bottom of the lower supports, and a first vibration damper and a second vibration damper arranged between the upper supports and the lower supports. The first vibration reduction device comprises a first vibration reduction assembly and a first guide assembly, the first guide assembly comprises a guide sleeve and a guide column, the interior of the guide sleeve is of a cavity structure, the guide column is slidably mounted on the inner wall of the guide sleeve, the first vibration reduction assembly comprises a first vibration reduction spring, and the first vibration reduction spring sleeves the outer sides of the guide sleeve and the guide column; the second vibration reduction device comprises a second vibration red