Based on the analysis of the physical properties of granite residual soil， microbial induced carbonate precipitation experiments are conducted on granite residual soil with different perfusion times in the designed laboratory test device， using a mixture cement of bacillus pasteurii with calcium chloride and urea colloidal solution under different concentration. Experiments are conducted on cemented specimens of different treatment conditions for the Unconfined Compression Strength （UCS） experiment， calcium carbonate precipitation experiment and disintegration experiment. In this paper， X-Ray Diffraction （XRD） and Scanning Electron Microscopy （SEM） are also used to analyze the microstructure besides. Based on the above experiments， the effect of cement concentration and perfusion times on the strength characteristics of cemented granite residual soil is investigated. The results show that the cementing effect of the specimens is best when the concentration of the cementing solution is 1. 0 mol/L within the range of the experiment parameters and the perfusion times are the same. When the concentration of the cementing solution is the same， the more perfusion times， the better the cementing effect of the specimens. The disintegration of the cemented specimens is greatly reduced， and the disintegration coefficients are less than 30%. In addition， the calcite crystals produced by biocement appear as distinct clusters， which fill and cement between the soil agglomerates. This is distinct from the microbial cementing properties of sandy soils， but the cemented process and mechanism of both are similar.