A distributed optimization software platform based on C/S and B/S coexistence architecture is designed and developed to meet the requirements of wind tunnel force measurement with high accuracy and reliability. On the basis of the conventional balance structure design optimization method, the platform can make multi-users simultaneously carry out online design optimization and verification calculation of the balance structure. Through the analysis of various factors involved in the optimization design of balance, combined with a variety of software and optimization strategies, using the secondary development and encapsulation of various softwares, an optimization support platform for upgrading conventional strain balance is constructed. The experimental results show that the platform can complete the remote design and verification calculation of the balance, and improve the quality and efficiency of the balance design.