In this paper, series of mortar tests with Aeolian sand as its fine aggregate were launched. Result shows that the admixture flyash can effectively improve the liquidity and water capacity, hence to improve the workability of the mortar. As the mortar age increases, with the surface activity of flyash gradually brought into full play, the long-term mortar strength can be ensured. The compound additive with polycarboxylic as the water reducing agent, neopelex as the gas-forming agent and the sodium silicate, reduced the required water by about 15% without changing the consistency of the mortar mixture. United Expansive Agent (UEA) was used to reduce the shrinkage rate of the mortar mixture. The Cost Performance Indicator (CPI) was introduced to evaluate the cost performance of the mix mortar, suggesting that the CPI of the mix mortar is 1.38 times of that of the mortar with river sand. Test results of various index value shows that the mortar mix ratio obtained in this paper can meet the need of plastering and masonry engineering.