The invention discloses a metering type feeding device for ornamental fish. The device comprises a storage can, the storage can comprises an upper cover and a can body, the lower end of the upper cover sleeves the upper end cornice of the can body, a drying box is installed at the top of the interior of the upper cover, a controller is installed on the right side outer wall of the can body, a display is installed at the lower end of the controller, a temperature sensor is installed at the lower end of the display, a pressure sensor is installed at the lower end of the can body, and a discharging tube is installed at the lower end of the middle of the pressure sensor. By the arrangement of the drying box, the pressure sensor, the controller, an electromagnetic valve, a vibration motor, thedisplay, the temperature sensor and a sensing end, the problems that the healthy condition of fish is affected by the easy mildewing of feed caused by moisture, the feeding device is easily blocked when discharging is conducted, the feeding device has a single function, the ornamental fish eat excessive feed and irregular deaths are caused, timely and quantitative feeding cannot be conducted, andmetering cannot be conducted on the feed are solved.