The invention relates to a sleep office chair, and belongs to the technical field of office supplies. The office chair comprises a backrest part, a cushion part, and an underframe part. The backrest part comprises a sliding covering device, which can cover the upper body of a user when the user lies down and has soundproof and heat insulation functions. The cushion part comprises a waist coveringdevice, a ventilation and air conditioning device, and a pad part. The waist covering device can be used as an armrest, when the user sits on the office chair. The waist covering device can cover thewaist of the user when the user lies down and has soundproof and heat insulation functions. The ventilation and air conditioning device can carry out ventilation and adjusts the temperature when the user lies down. The pad part is used to assist ventilation, temperature adjustment, and supporting. The underframe part comprises a leg covering device and a sliding support structure. The sleep officechair is like a common office chair, when the sleep office chair is in an office mode. When he sleep office chair is in a sleep mode, the office chair has the functions of insulating sound, adjustingtemperature, and preventing mosquitoes. People can use the office chair to have high quality sleep after work.