The invention discloses a low-cost anti-buckling support which comprises a round steel pipe arranged outside, a pumecrete rod, a polyurethane material layer arranged between the round steel pipe and the pumecrete rod, a sealing plate for sealing a port and a connecting plate for being connected with an external integral structure. The length of the round steel pipe is larger than that of the pumecrete rod, and the bottom of the round steel pipe is flush with the bottom of the pumecrete rod. When the low-cost anti-buckling support is axially compressed, local buckling of the steel pipe serving as a thin-walled pipe, which possibly occurs, cannot occur due to the constraint of the pumecrete rod, and the same reason also avoids possibility of overall buckling of the steel pipe; as a result, the steel pipe support obtains anti-compression bearing capability capable of being equal to or similar to the tension resistance, so that it is guaranteed that a component always maintains good bearing capacity and energy-dissipating capacity under a tension-pressure circulation effect caused by an earthquake. It is indicated through calculation that the support can absorb and consume earthquake energy in a large quantity and displays an excellent anti-seismic property.