we analyse the existing problems m vanous methods to evaluate RCC mixture workability used at home and abroad , bring up a new test method in which we adopt two quality indexes - value of "VC"and compactness to indicate mlxture workability. Value of "VC" mainly reflects conslstency ,while compactness reflects effect of compactmg m a glven conslstency. As shown m the expenment ,the indexes of "VC" and compactness can ensure the RCC mlxture , while vibrated &. rolled , will be compacted easily and tightly , thus get a good surface quality.