By adopting the method of orthogonal experimental design,the influence of three independent variables,that is water-solid ratio,water-cement ratio and sand percentage on the shrinkage of concrete and other related properties was studied.The results show that water-solid ratio is one of the most important factors affecting shrinkage of concrete,secondly water-cement ratio and lastly sand percentage under the same conditions.By using value coefficient to analyze the orthogonal experiment results,the optimized mix proportion of concrete is determined.Meanwhile,the influence of aggregate-cement ratio and paste-aggregate ratio is discussed.The results show that there are critical values leading to the minimum of the concrete shrinkage.