Firstly,The reinforcing mechanism of grouting and grouting parameter calculation method about crushed rock soil fill foundation was analyzed.Basing on the characteristics of crushed rock soil fill foundation in mountain areas,validity and rationality of test method to evaluate grouting reinforcement effect were studied by combining with the actual engineering.The results indicate that a single test evaluation method has the high cost and low reliability.It is a reliable and economy method to evaluate the reinforcement effect by applying Rayleigh wave,static load test and dynamic penetration test.The comprehensive evaluation by using bearing capacity of foundation and deformation modulus is a reasonable and applicable judge criterion for the effective improvement range.