To protect against plague, we must pay attention to eliminating the source of infection, interrupting the transmission channels, and doing a good job of personal protection. 1. Eliminate the source of infection: pay attention to clean up the dead ends of the living environment, keep the environment dry and hygienic to avoid the breeding of bacteria. Kill fleas, cockroaches, rats and other animals, and avoid contact with patients diagnosed with plague. 2. Interrupt the transmission pathway: avoid contact with stray animals, do not eat wild animals, and actively deal with personal hygiene, pets at home should be regularly de-fleaed, clean. 3. Do a good job of personal protection: after contact with animals must be clean and wash hands, good personal protection attention to wear a mask, do not go to the home of patients diagnosed with plague excessive stay to prevent infection. Therefore, when I suspect that I or the people around me infected with plague, we should report to professional organizations in a timely manner, and at the same time, timely consultation, improve the relevant examination, a clear diagnosis of the early start of treatment.