Abstract: In order to solve the problems that the working performance of self-compacting concrete (SCC) decreased in actual production, the main affect factors including ambient temperature, mixing time, admixtures and raw material stacking on SCC were analyzed by slump spread test and mixing test. According to the actual situation of mixing, the adjustment aiming at working performance was raised. The measures for the quality control of SCC were put forward. The research results indicated that the slump spread would lose quickly with the increase of temperature, which could be effectively prevented by the retarder. There was a critical value of the mixing time which should be adjusted according to actual situation. The dosage of super plasticizer needed to be adjusted to avoid segregation or bleeding. Stacking of sand and stone in open-air would make water content and mud content change which influenced the fluidity of SCC. Closed material management should be implemented.