In today's society, the market competition is becoming increasingly fierce. The focus of competition among brand enterprises is not only limited to the function and appearance of products, but also the product quality and reliability are paid more and more attention by the market and customers. In recent years, ring through testing has increased investment in environmental test equipment and equipped with various environmental test equipment. By using various environmental test equipment to simulate the temperature and humidity changes in the climatic environment, accelerate and stimulate the possible failure of the product in the service environment, so as to verify whether it meets the expected quality objectives in R & D, design and manufacturing, and provide overall evaluation for the product to determine the reliability life of the product.