The balance of the commercial flow distribution is known as the key link in the design of commercial buildings, and the commercial flow distribution is predicted based on the previous experience of some experts, which inevitably proves  to be become subjective or obsolete to some extent. The development of space syntax helps to obtain a more accurate predication of pedestrian flow distribution. This paper takes two typical shopping malls in Guangzhou as prototypes to conduct simulations in different spatial organization patterns by using the Depthmap and SPSS softwares. The results indicate that (1) under the condition of the balanced distributions of entrance and vertical transportation, the method combining integration with tenants can be used to predict the pedestrian flow distribution more effectively; (2) the space form of concise organization and relative symmetry helps to realize a balanced pedestrian flow distribution; and (3) when the C spatial organization is poor, reasonable tenants combination helps to improve sharing to a certain degree.