This Recommendation specifies the framework and technical requirements for the digital human access interfaces in real applications including session connection management, system initialization, digital asset parsing, personalized customization, AI capability invocation, body/facial driven interaction, rendering display and network transmission. This Recommendation can be used to guide relevant parties to implement and deploy digital human access systems in a standardized manner. A well-defined framework allows developers in the application layer to focus on creating user-facing features and use cases, while engineers working on the infrastructure layer can focus on optimize and improve the underlying technologies.