The invention relates to a push type space low-temperature gas generation device. The push type space low-temperature gas generation device comprises a solid module and a liquid module; the solid module and the liquid module can slide oppositely; the solid module comprises a medicine column shell; a weak spot is arranged on a shell of the liquid module; the liquid module is filled with a reactionsolution; and by pressing the liquid module, the medicine column shell penetrates through the weak spot on the liquid module to enter the liquid module. Meanwhile, the invention also relates to a usemethod of the push type space low-temperature gas generation device. The push type space low-temperature gas generation device and the use method thereof have the following advantages: the push type space low-temperature gas generation device is simple in structure, lightweight and convenient to move and use; meanwhile, an electric signal is not needed, and gas can be produced only by mechanical pressing; furthermore, the device is safe in component, generates low-temperature gas, avoids pollution to the reaction product and is suitable for space engineering.