A method for controlling an intelligent lamp to work automatically according to people's habit includes generating a table in the memory, the table records values of a group of operational parameters of the intelligent lamp each time a user operates the intelligent lamp. Determining a frequent event and an accidental event in the predetermined time period in one day in last one week/month/year. Then obtaining all values of the operational parameters of the frequent events, and respectively calculating an accuracy value for each operational parameter according to an algorithm. In addition, controlling the lighting unit to work according to the accuracy values of the operational parameters, thus, an intelligent lamp for automatically working according to people's habit is also provided.