Quantitative fish feeder and using method of the quantitative fish feeder

The invention discloses a quantitative fish feeder and a using method of the quantitative fish feeder. The quantitative fish feeder comprises a box plug, a charging hole, a side cover, a food stuff box, a blanking hole, a blanking baffle, a pushing piece groove, a discharging baffle, a discharging hole, a pushing rod, a press button, a return spring and a horizontal H-shaped fixing frame. Fish food enters the food stuff box from the charging hole; after the press button is pressed down, the fish food in the pushing piece groove is pused out and then falls into a fish bowl through a discharging hole; and later the press button is released and the return spring returns back, therefore once fish feeding is finished. The quantitative fish feeder is simple in structure and convenient to operate, can quantitatively feed fish and simultaneously can serve as a container for storing the fish food; and the quantitative fish feeder is low in production cost and capable of realizing mass production, has great market prospect, and is especially suitable to fish breeding groups who are fond of breeding fish but dislike troubles.