The invention discloses an automotive shock-absorbing seat with a steel structure. The automotive shock-absorbing seat comprises a seat plate; a rotating shaft is arranged on one side of the seat plate; a seat backrest is movably connected to the rotating shaft in a sleeving manner; a first sliding rod is fixedly mounted in the seat plate; a fixing block is fixedly mounted on the first sliding rod; a first spring is fixedly connected to the right side of the fixing block, the inner side of the first spring is movably connected to the first sliding rod in a sleeving manner, and one end, far away from the fixing block, of the first spring is fixedly connected to one side of a movable block. The automotive shock-absorbing seat disclosed by the invention has the benefits that as a first movable rod, a guide rod, a second movable shaft and a rotating rod are arranged, when the vibration occurs, the first movable rod and the second movable rod firstly absorb the vibration, so that two first sliding blocks slide towards the reverse direction, a third spring is driven to stretch, and a certain shock-absorbing role is played; the first sliding block slides to drive the second sliding block to slide, so that the guide rod drives the rotating rod to rotate, further, a buffer block on the rotating rod extrudes the seat plate, and a shock-absorbing effect is realized, and the advantage of excellent damping effect is achieved.