The present invention is a body in close contact with the ground； A head mounted rotatably up and down and left and right on the upper portion of the main body and equipped with a light source irradiating unit for irradiating a light source for attracting a pet and a camera for photographing the behavior of the pet； A mode selection unit capable of selecting a pet cognitive improvement mode or a pet stress relief mode； A sound source output unit for outputting a pulse wave type sound source corresponding to the selected mode； An infrared sensor for detecting the movement or position of the pet； A sound sensor for sensing a pet's voice； And a control unit that automatically selects a pet cognitive improvement mode and a pet stress relief mode through the sensed movement or voice of the pet, wherein the control unit performs pet stress when the pet movement degree or voice volume is greater than a reference value. Selecting a release mode, and if the pet's motion level or voice volume is less than or equal to the reference value, select a pet recognition capability improvement mode to relieve the stress of the pet or improve the pet's cognitive ability, and is connected to the control unit. When the pet stress relief mode is selected, the sound source output unit is a pulse wave having a frequency of 6 to 12 동안 for 20 minutes in the beginning, 3 to 6 은 for 30 minutes thereafter in the middle, and 6 to 10 은 for 10 minutes thereafter in the second half. Output the sound source, and when the pet cognitive improvement mode is selected, 5~9 동안 for 10 minutes in the beginning, 4~5 은 for 15 minutes thereafter in the middle, and 5~11 ㎐ frequencies for the subsequent 35 minutes It provides a pet care device, characterized in that for outputting a pulse wave sound source. Therefore, the light source can be easily attracted to the body by irradiating the light source to the pet, and the movement and sound of the pet can be detected using sensors to selectively store the stored s
