门神是春节贴于门上的一种画类。 门神是道教和民间共同信仰的守卫门户的神灵，旧时人们都将其神像贴于门上，用以驱邪辟鬼，卫家宅，保平安，助功利，降吉祥等，是民间最受人们欢迎的保护神之一。

Putting up or changing door gods, is an important custom among the Chinese during Spring Festival. Door gods are pictures of deities posted on the door outside and inside the house. They are expected to keep ghosts away, protect the family and bring peace and good fortune. They are named according to function. There is the main door god, the secondary door god, the back door god and the wing room door god.

Between Laba Festival, on the eighth day of the last lunar month, and Little New Year, on the twenty-third day, families throughout China undertake a thorough house cleaning, sweeping out the old in preparation for the New Year.

 
It is believed that in order to ensure the ghosts and deities' timely departure,people must thoroughly clean both their persons and their dwellings, down toevery last drawer and cupboard.