Chickenpox patients 1~2 days before the onset to the complete end of the rash are contagious, personal constitution is different, the general infectious time for about 10~14 days. Chickenpox patients are the only source of infection, mainly through respiratory droplets and direct contact transmission, highly contagious, chickenpox incubation period can be 10~21 days, divided into prodromal and rash period. Chickenpox patients before the onset of 1 ~ 2 days to the complete end of the rash are contagious, the rash period of about a week, the scabs fall off and heal, generally do not leave a scar, chickenpox is a self-limiting disease, about 10 days to heal, 10 ~ 14 days will not be infected to others. Patients should be isolated in time for treatment, pay attention to daily hygiene habits, avoid contact with others, pay attention to rest, avoid cold, balanced nutrition.