Zhangcun Mine No. 3109 comprehensive mechanized coal mining face coal-thin zone in No. 2 coal seam 4231 mining area of Jizhong Energy Resources Corporation Ltd. was taken as the study object, based on the characteristic of large mine discharge, the research on the gob-side entry remaining technology in the condition of high water volume was conducted. The support method of gob-side entry remaining the individual prop cooperating with the articulated roof beam was proposed, which got a significant effect. The bottom of gob-side entry remaining and the deflection of the two sides were controlled within 1 000 mm, which solved the support of gob-side entry remaining in the condition of great water problem and got a good economic benefit，which provided reference and experience for similar conditions.