Automatic throw-in apparatus for washing liquid and washing machine equipped therewith

The utility model discloses an automatic detergent dispensing device and a washing machine equipped with the device, and can solve the problem that the washing machine of the prior art is incapable of automatically dispensing a proper amount of detergent. The automatic detergent dispensing device comprises a program controller and a liquid storage box, and is characterized in that the device also includes a metering device electrically connected with the program controller, and the metering device comprises a valve cavity and at least four valve ports arranged around the valve cavity, wherein the first valve port is arranged on the bottom of the valve cavity for communicating a pipe for feeding water; the second valve port is connected with the liquid storage box; other valve ports are respectively arranged on two sides of the valve cavity; and the program controller is used for controlling opening/closure of each valve port. The automatic detergent dispensing device can automatically dispense a proper amount of detergent according to the weight of the laundry, so that the washing machine with the device can wash the clothes cleanly without wasting the detergent and without damaging the clothes, the human body and the environment.