The invention discloses a snaking prevention shock absorber. The snaking prevention shock absorber comprises a piston rod, a piston, a pressure cylinder, a sealing end cover, an oil storage cylinder, a bottom valve and a fastening piece, wherein the bottom valve is provided with a compression side proportional valve and a first oil absorption one-way valve, two ends of the compression side proportional valve and the first oil absorption one-way valve are respectively communicated with a right cavity of the pressure cylinder and a low-pressure oil storage area, the bottom valve is provided with a connecting sleeve, the connecting sleeve is sleeved at the periphery of the right end part of the pressure cylinder, the bottom valve is provided with an oil outlet hole which is provided with a downward opening and is communicated with the low-pressure oil storage area, the piston is provided with a compression side overflow valve and a stretching side overflow valve, the sealing end cover is provided with a stretching side proportional valve and a second oil absorption one-way valve, two ends of the stretching side proportional valve and the second oil absorption one-way valve are respectively communicated with a left cavity of the pressure cylinder and the low-pressure storage area, and the upper parts of cylinder walls at two end parts of the pressure cylinder are respectively provided with a first throttling hole and a second throttling hole. According to the snaking prevention shock absorber disclosed by the invention, the damp generating flexibility of the snaking prevention shock absorber can be increased, and the performance stability can be ensured.