A hygienic pet conservative band includes a patch, a lengthwise band and two lateral bands. The patch covers on the waist and the bottom of a pet, and the lengthwise band is connected with the patch and the two lateral bands are connected laterally with the lengthwise band, Then the pet band can be worn on the body of a pet, with the patch completely hiding the sexual organ of a pet, not liable to loosen off in spite of movement of the pet and preventing the pet from being coupled undesirably to get pregnant, also having good ventilation.