The invention discloses a timed quantitative feeder, and relates to the field of pet raising equipment. The feeder comprises a storage box composed of a shell, a quantitative cylinder and a retaining plate mechanism, the bottom of the storage box is provided with an opening, the quantitative cylinder directly faces the opening, the retaining plate mechanism is provided with a rotating shaft, an upper retaining plate and a lower retaining plate, and the rotating shaft is connected with a torsion spring, pivoted to the shell of the feeder and driven by a motor controlled by a timer. An angle is formed between the upper retaining plate and the lower retaining plate, the lower retaining plate covers the quantitative cylinder, the upper retaining plate rotates away from the opening, and feed falls into the quantitative cylinder to realize quantification. After set time, the timer is connected with a circuit, the motor drives the rotating shaft, the upper retaining plate covers the opening, the lower retaining plate rotates away from the quantitative cylinder, and the feed in the quantitative cylinder falls into a raising pool; after the motor stops rotating, the retaining plates rotate to original positions under the action of the torsion spring to quantify the feed again. The timed quantitative feeder completes feed feeding automatically, and is simple in structure, low in power consumption, capable of adjusting feeding time and feeding amount optionally, and convenient and practical.