The utility model discloses a leakage prevention gas condensate drainer comprising a condensate discharge pipe, a discharge pipe upper valve, a discharge pipe lower valve, a high pressure chamber, a lower pressure chamber, a steam discharge pipe, a detection valve, a steam source valve, a normally open valve, a pollution discharge master pipe, an overflow pipe, a liquid level meter, a water inlet pipe, a water supply magnetic valve and a water storage pool. The high pressure chamber and the lower pressure chamber are separated by a partition board. The overflow pipe is connected into the lower pressure chamber from the high pressure chamber. One end of the water inlet pipe is connected with the water supply magnetic valve and then connected into the lower pressure chamber. A detection rod of the liquid level meter is fixedly arranged in the lower pressure chamber. The leakage prevention gas condensate drainer is simple in structure and convenient to use, gas leakage is avoided, safe production is ensured, water is utilized reasonably, water resources are saved, cost is lowered, production fields and the surrounding environment are protected, and the popularization and application value is great.