Pubic lice usually survive 1-2 days in the blanket. Pubic lice are a parasite that lives on the roots of human pubic hair. Pubic lice is a contagious skin disease and is currently one of the more common sexually transmitted diseases, patients mainly manifest itching in the pubic area, often occurring in sexually active young adults. The more sexual partners you have, the higher the chance of incidence. When pubic lice fall off the quilt or clothing, it is usually difficult to survive due to the lack of nutrients needed to live and a suitable environment for them to live in, and they usually die on their own 1-2 days after falling off. Therefore, pubic lice are mainly transmitted by sexual intercourse, and indirect transmission through contact with quilts and clothing is less likely. In treatment, first of all, all pubic hairs should be removed and topical ointment should be applied, which is generally effective. Therefore, daily life should be strengthened to prevent the occurrence of pubic lice, pay attention to personal cleanliness and hygiene, bathe regularly, change underwear regularly and avoid unclean sex life.