In a temperature adjustment system and method for a storage system, a corresponding relationship between data transfer rates of the storage system and rotational speeds of electric fans coupled to the storage system is established. Real-time data transfer rates of the storage system are measured. If there is a continuous increase or decrease in data transfer rates of the storage system, a rotational speed of the electric fans is determined according to the real-time data transfer rates and the corresponding relationship. The electric fans are controlled to run at the determined rotational speed.