The efficiency of warehousing and distribution in the turnover of architectural aluminum alloy formwork in China is low. In order to improve the turnover efficiency of architectural aluminum alloy formwork, an "octopus" sorting line is designed, which combines the main line shunting and grading sorting modes. Flexsim simulation software is used to make visual simulation of the operation of the sorting line. The operation bottleneck of the sorting line is obtained by analyzing the simulation results based on the data. The bottleneck problem was solved by optimizing the process flow and adjusting the distribution of sorters. It improves the sorting efficiency of architectural aluminum alloy formwork.