The LLM Security Protection System is a content security and risk control solution specifically engineered for large model applications, deeply integrated into AI large model business workflows. Leveraging an internationally advanced multilingual semantic analysis engine, it conducts automated multi-dimensional risk detection on input and output content of mainstream language models, delivering services including computational resource overuse protection, prompt injection attack detection, model abuse analysis, and sensitive data identification. Widely applicable to domains such as conversational AI, intelligent Q&A systems, content platforms, and financial/government services, it empowers enterprises to build compliant and trustworthy intelligent content ecosystems.