The aluminum alloy high precision vehicle and milling composite processing structure, the mirror adopts ultra-precision grinding processing, the mirror penetration film adopts film process, the mirror body adopts anti-salt spray electroplating surface treatment, which can meet the infrared reflection and imaging performance under high-speed swing conditions, and meet the adaptability requirements of humid heat and salt fog environment.The product integrates mechanical, optical, coating and surface treatment and other process disciplines, and its process and technical characteristics are as follows: