The electric adjustable ball valve is suitable for two position cutting and adjusting occasions. The ball valve and the actuator are connected in a direct way. The servo system is built into the electric actuator, and it is not necessary to configure a servo amplifier. The operation can be controlled by input 4-20mA signal and 220VAC power supply. The intelligent electric ball valve adopts direct connection mode, and the electric actuator has built-in servo system.