Abstract: To research the influence of anterior concealed confined karst cave on stability of roadway surrounding rock, based on a roadway project with anterior concealed karst cave, variation characteristics for stress, deformation, plastic zone and water inflow of roadway surrounding rock under different cave conditions of fillings and water pressure were analyzed by using FLAC^3D. The results show that: when roadway face is near karst cave, soft filling inside the cave will cause obvious stress concentration in surrounding rock between heading face and karst cave, which makes the displacement of heading face assume a mutation growth; the phenomena for shear slip fracture of rock before roadway heading face will become not obvious by the barrier effect of karst cave when there is a filling-type karst cave before the roadway; the water inflow of roadway heading face has exponential increase relationship with cave water pressure.