The invention discloses a shock absorber for automobile seats, comprising a horizontally arranged support plate; a support column is arranged above each of the four corners of the support plate, the inner side of each support column is provided with two fixed columns, both ends of the two fixed columns are provided with a screw rod, one end of each screw rod is clamped with a baffle plate, A basedevice is installed under the support plate, the lower part of the base device is provided with a bottom plate, a support bar is arranged above the four corners of the bottom plate, the upper part ofeach of the support bars penetrates the support plate, and the support bars are connected with the support columns; an outer part of each of the support bars is sleeved with a spring; a lower part ofthe support bars penetrates the bottom plate; and a bottom part of the support bars is sleeved with a second nut. Through the support column to support the automobile seat, the spring sleeved with thesupport bar can effectively reduce the vibration amplitude of the seat, thereby reducing the vibration feeling.