Abstract: In order to realize the efficient utilization of coal waste gangue and explore the influence of spontaneous combustion gangue particles on strength of shotcrete, the article studied the influence of different mixing amount of gangue particles in coarse aggregate on compressive strength of concrete briquette and studied the influence of substitution fine aggregate on the compressive strength of concrete briquette and mortar briquette. Then, the article made the experimental data with SPSS analysis software. It shows that the mixing amount of gangue particles in coarse aggregate has remarkable influence on the concrete strength. The mixing amount of gangue particles should not exceed 10%, otherwise, concrete strength will reduce remarkably. Replacing river sand with small particles as fine aggregate can enhance concrete strength, and has little influence on original concrete strength, but significantly on concrete 28 d's strength. The strength of gangue particle mortar briquette is better than river sand mortar briquette and the longer the age, the more obvious difference between them.