In order to resolve automatic measurement, automatic monitoring and control of heat energy, a new type IC Card heat energy meter with automatic monitoring and control is designed. Software and hardware design of the heat instrument is introduced. Solutions of these problems are proposed throng analysis of engineering design problems. Lower power consumption and high precision requirements of heat measurement are met by collecting lower consumption components and intelligence design manners. Automatic measurement, monitoring and control functions are realized through gathering heat parameters of end-users on time, and analysis, comparing on the gathered data and data from standard meter by microcomputer. Preliminary tests show that the heat energy meter has functions of high precision, lower power consumption, strong intelligence and can achieve automatic Measurement, automatic monitoring and automatic control.