An automatic pet feeding device comprising: a grain storage bin comprising a grain leaking member formed at a lower end thereof; a pushing granary arranged below the grain storage bin and comprising a grain delivery member , the pushing granary in communication with the grain leaking member ; a grain pusher slidably arranged between the grain storage bin and the pushing granary ; and wherein the grain pusher is configured to push pet food in the pushing granary out of the grain delivery member , and open or close the grain leaking member and the grain delivery member ; and wherein, the feeding device further comprises: a grain baffle arranged close to the grain delivery member and configured to open and close the grain delivery member ; the feeding device further configured such that when the pushing granary is in communication with the grain leaking member , the grain delivery member is closed by the grain baffle , and when the pushing granary is not connected with the grain leaking member , the grain delivery member is opened by the grain baffle ; characterized in that the grain baffle comprises a baffling portion , a rotating portion and a pushing rod , the rotating portion arranged at an end of the baffling portion , and the pushing rod connected to the rotating portion ; the rotating portion rotationally arranged at a bottom portion of the pushing granary ; the grain pusher comprising a pushing bar corresponding to the pushing rod ; and wherein the pushing bar comprises a first pushing portion and a second pushing portion connected with the first pushing portion , the second pushing portion arranged close to the grain delivery member , and a thickness of the second pushing portion that is towards the pushing rod greater than a thickness of the first pushing portion that is towards the pushing rod ; the pushing rod comprising an arc portion arranged close to the grain delivery member , and a flat portion connected with the arc portion . a grain storage bin comprising a grain leaking member formed at a lower end thereof; a pushing granary arranged below the grain storage bin and comprising a grain delivery member , the pushing granary in communication with the grain leaking member ; a grain pusher slidably arranged between the grain storage bin and the pushing granary ; and wherein the grain pusher is configured to push pet food in the pushing granary out of the grain delivery member , and open or close the grain leaking member and the grain delivery member ; and wherein, the feeding device further comprises: a grain baffle arranged close to the grain delivery member and configured to open and close the grain delivery member ; the feeding device further configured such that when the pushing granary is in communication with the grain leaking member , the grain delivery member is closed by the grain baffle , and when the pushing granary is not connected with the grain leaking member , the grain delivery member is opened by the grain baffle ; characterized in that the grain baffle comprises a baffling portion , a rotating portion and a pushing rod , the rotating portion arranged at an end of the baffling portion , and the pushing rod connected to the rotating portion ; the rotating portion rotationally arranged at a bottom portion of the pushing granary ; the grain pusher comprising a pushing bar corresponding to the pushing rod ; and wherein the pushing bar comprises a first pushing portion and a second pushing portion connected with the first pushing portion , the second pushing portion arranged close to the grain delivery member , and a thickness of the second pushing portion that is towards the pushing rod greater than a thickness of the first pushing portion that is towards the pushing rod ; the pushing rod comprising an arc portion arranged close to the grain delivery member , and a flat portion connected with the arc portion . <EOS>