Abstract: The physicochemical properties of sawdust-compound substrates and their effects on cherry tomato were studied by pot experiment. The results showed that the sawdust- compound substrates were better than the peat-compound substrate (60%peat+ 20%sand +20%perlite) in the physicochemical properties, such as total porosity, aeration porosity, water content and pH. Among them the compound substrate of 60% sawdust+40% coal cinder (T4) was the best one and also had the biggest capability of conserving water and fertilizer. Therefore T4 got the highest yield increased by 30.3% and had not significant difference in quality compared with the control. As a conclusion, T4 was an appropriate compound substrate for cherry tomato soilless culture.