Abstract: Taking Gubei coal mine 1232（1）full mechanized working face as research object, the paper analyzes the conditions of geological environment, the roof and floor of the coal bed firstly，then makes a plan for strata pressure observation and an actual measure and analysis of the fully mechanized support working resistance and the deformation of surrounding rock, the laws of the strata behavior were achieved, which provides a nice technique condition for high-yield, efficient, safe, low power consumption production of working face. The results of study show that advance abutment pressure of the island mining face increases obviously, surrounding rock deformation of the gob-side entry driving in the island mining face increases dramatically, and it is very difficult to support roadway, so support strength of the gob-side entry driving in the island mining face should be increased.