Usually, head lice can survive for 10-20 hours in the quilt. Head lice are tiny parasites that live mainly on the roots of the hair and feed on human blood. It is difficult for this parasite to survive for long periods of time in the bedding alone, and its survival time fluctuates significantly depending on the temperature and humidity. When the temperature is high and the environment is dry the survival time will be shorter, around 10 hours. If the temperature is low and the humidity is high, the survival time will be longer, up to 24 hours. In the head lice survival time, once contact with other people’s bodies or hair, head lice can be parasitized on the head, which can lead to the transmission of head lice. It is recommended that when staying in a hotel or going to a public bathing area, it is best to carry your own clothing or clothing that is close to your body to reduce the probability of head lice infection.