According to the problem that current intelligent power terminals can only achieve the basic voltage, current, power and power consumption measurement but ignore the influence of environmental quality on power consuming behavior, digital signal processing technology is applied into the socket to design and develop a new type of intelligent power monitor. This monitor adopts modularization design. Based on electrical measurement, it adds the function of harmonic analysis, wireless communication, on-off control and data display. Considering the user’s somatosensory, it collects temperature, humidity and other data to detect indoor environmental comfort, which promote the optimization of home electricity use. This paper firstly points out the shortage of current intelligent power terminals in data detection and information interaction. Then it describes the hardware design of the intelligent power monitor. Its program running process is also elaborated. Test results of the developed prototype validate the effectiveness of this monitor.