The invention discloses a dog training device, which comprises a handheld terminal and a necklace, wherein the handheld terminal comprises a microphone, a transmitting unit, a transmitting controller and a transmitting-terminal storage battery, the transmitting-terminal storage battery is connected with the transmitting controller, the microphone is connected with the transmitting controller, the transmitting controller is connected with the transmitting unit, and the transmitting unit is provided with a transmitting antenna; and the necklace consists of a receiving terminal and a bandage, the receiving terminal comprises a receiving unit, a receiving controller, a receiving-terminal storage battery and a loudspeaker, the receiving-terminal storage battery is connected with the receiving controller, the receiving unit is provided with a receiving antenna, the receiving unit is connected with the receiving controller, and the receiving controller is connected with the loudspeaker. Due to the adoption of the dog training device, not only can a pet receive a command transmitted by an owner, but also the electric shock is used as a punishment means, and warning can be issued before the punishment through vibration. Therefore, more humanization can be realized when the pet is trained, care of the owner on the pet can be reflected, and the training effect can be greatly improved.