Scratched by the dog’s teeth, but did not bleed, broken skin, with clean water to clean the skin surface of the saliva or other secretions can be, generally do not need to go to the hospital to inject rabies vaccine. Because even if there is rabies virus on the dog’s teeth, it will not invade into the human body through the unbroken skin, so there is no need to worry too much about rabies infection. However, it is necessary to be very careful to test whether there is broken skin, which can be tested by the following two methods: First, use a strong light to irradiate the localized bite to see whether there is broken skin. Second, the use of antiseptic solution to test, for example, you can use hydrogen peroxide or alcohol to wipe the bite area. If there is the formation of blisters in the hydrogen peroxide, or if there is pain in the local skin when wiping with alcohol to prove that there is broken skin, you must go to the hospital to inject rabies vaccine.