Abstract: On the basis of field tests,the paper analyses the change of support resistance,roadway surface deformation and the moving of top-coal ＆ roof in high geological stress and extra-thick ＆ extra-soft seam adopted longwall top-coal caving with light hydraulic support in Zhuxianzhuang coal mine.The paper indicates that the designed support resistance is reasonable,the maximum value of abutment stress and the first moving point are both nearer to the face and the roadway surface deformation becomes more serious than those in general hydraulic support caving face.