Relay is a function of the automatic isolation switching elements, are widely used in remote control, telemetry, communications, automation, mechatronics and power electronic devices, is one of the most important control elements.At present, China relay industry in the development of the main problems: the overall technological backwardness. The main production over patent protection relay products, and imitation than innovation, almost no breakthrough development; product development is unbalanced. Tech, high value-added products, while the ordinary electromagnetic, non-sealed products and more; less investment products for the consumer products and more; enterprise development imbalances. Overall technical strength of enterprises, economic efficiency is not high; while labor-intensive and have no self-development capacity of the assembly enterprises, because of low labor costs and other factors, relying on mass production, can still win certain benefits; exports plus value is low. Export volume but low-tech, with cheap labor costs, export manufacturers competing prices down, squeeze the limited market, earned the hard-earned money. These problems have hindered the relay industry. But visionary relay manufacturers have based on the actual business, and actively seek a breakthrough for the development of domestic enterprises trip out a new path of development.Communication is the future development direction of the automotive relay. Communications relay automotive relay will be R & D direction, communications relay relay become the largest application market, the third-generation communications relay has been widely used; solid state relays use of microelectronics technologies, products to intelligent, modular direction of development, market demand increased steadily; automotive applications as a relay's second largest market, increasing the amount of cycling, species expanded rapidly, especially in the automotive power systems 14 volts to 42 volts from the transformation will drive technology innovation; electromagnetic latching relay to their work status, low power consumption become the first choice for home appliances and electrical products, relay manufacturers continue to introduce new products. New varieties of domestic relay has reached the mid-1990s the world level, and gradually reducing the gap with foreign advanced level.