Abstract: Based on the phenomenon that gas emission of east wing is 5~10 times as west wing in Tangjiahe coal mine,the factors of influencing the gas emission of east wing and west wing are analyzed,it found that conformation,buried depth,thickness and metamorphic degree of coal seam were not the dominant factors,and the influence of Xiaosongyan syncline in superficial part of east wing is denied too.But after analyzing water inflow data of east wing and west wing,complementary relationship between gas emission and water inflow is found.Hydrological geological conditions have a significant impact on gas emission laws in Tangjiahe coal mine.