Abstract: With the background of geological conditions at 11910 working face of East shaft in Gequan Mine, by using self-developed caving plane test-bed, we adopt the mean of similar material simulation to test the loose top coal caving, obtain the top coal and rock interface morphology and the statistical data of top coal recovery rate for different caving ratios, intervals and ways, and analyze the change laws of top coal recovery rate about three different parameters. The result shows that the reasonable caving ratio is 1∶1, and the caving interval is 0.5 m; the way of caving is single round and order caving, which provides the reference for working face choosing parameters of caving.