The invention belongs to the technical field of bathroom equipment, and particularly relates to an intelligent bathroom water-mist formation preventing controller. The intelligent bathroom water-mist formation preventing controller comprises a detection sensor circuit, a data remote transmission circuit, a keyboard circuit, a power supply circuit, a microprocessor circuit, a display screen circuit and a drive output circuit; the detection sensor circuit is used for detecting temperature and humidity; the keyboard circuit is in a touch type, and comprises a manipulating key, a setting key, a parameter plus key and a parameter minus key; and a PB port of the microprocessor circuit is connected with the detection sensor, the microprocessor circuit acquires temperature and humidity data detected by the detection sensor, a PC port of the microprocessor circuit controls the data remote transmission circuit, and a PD port of the microprocessor circuit controls the drive output circuit. The intelligent bathroom water-mist formation preventing controller can automatically adjust and control an exhaust fan to discharge vapor so as to avoid water mist formed in a bathroom according to the current temperature and humidity of the bathroom, and solves the problems that the vapor is not discharged timely and the electric energy is wasted.