Objective: To improve the digital image system's retrieval speed and transmission efficiency, change the defect of traditional preservation and improve diagnostic quality of the image. Methods:Medical information transmission based on the socket can make the multi-threading parallel work to improve the running speed of the program, so images and files can be transmitted quickly. Results:Socket-based multi-threading technology is applied to the hospital departments and various remote medical system, that will improve the transmission speed and save time and money. Conclusion: Medical information transmission based on the socket can manage and application the medical imaging effectively.