Abstract: In order to implement end-to-end protection that was high-performance, certificate free, and compliant with national commercial cryptographic standards, this paper proposed a Web data security transmission scheme that integrated WebAssembly compilation optimization and SM9 identification password characteristics, elaborated on the scheme architecture, as well as key technologies such as SM9 algorithm porting method, certificate free authentication mechanism, data encryption transmission mechanism, and security enhancement design. Based on comparative experiments, the paper verified the superiority of the proposed scheme in terms of transmission performance, security, compliance, and low cost, and has promotional value.