The invention discloses a control method of a dish washer. The dish washer includes a shell, and an operation chamber is formed in the shell. The control method of the dish washer includes the following steps that after the dish washer finishes washing dishes, the humidity of the operation chamber is detected by a temperature and humidity sensor; a preset humidity range where the humidity is located is determined, wherein several preset humidity ranges are provided, each humidity range corresponds to one running mode, capable of drying the operation chamber, of the dish washer, and each running mode corresponds to a group of drying parameters; the dish washer is controlled to run in the running mode corresponding to the preset humidity range. By the adoption of the control method, according to humidity, detected by the temperature and humidity sensor, in the operation chamber, and according to the preset humidity range corresponding to the detected humidity, the dish washer is controlled to run in the running mode corresponding to the preset humidity range, therefore, the dish washer can run in the different running modes in the different preset humidity ranges, and then the running power consumption of the dish washer can be reduced. The invention further provides the dish washer and a computer readable storage medium.