The present invention relates to a system and a method for diagnosing and controlling an incineration facility and managing the life cycle thereof through a heat exchange and design program and an operation mode analysis of an operator of the incineration facility, and the purpose of the present invention is to improve operation efficiency by comparing and analyzing initial design values (a) of the incineration facility, measured actual values (b) obtained by measuring waste composition and heating values changed after constructing the incineration facility, and operation values (c) indicating output values which are actual operating adjustment values and operating result values operated by the operator and by analyzing operation modes of the operator. The system for diagnosing and controlling an incineration facility and managing the life cycle thereof through a heat exchange and design program and an operation mode analysis for an operator of the incineration facility, according to the present invention, comprises: a database for storing, in a predetermined period of time, the operation values (c) according to an operation of the operator, which are detected by incineration facility operating sensors (10) and provided through an MMI, the incineration facility operating sensors (10) detecting operation values of the incineration facility, which include a primary amount of combustion air, a secondary amount of combustion air, a fire grate moving speed, a temperature, an amount of discharged gas and an amount of steam, outputted by an operation of the operator, the design values (a) according to the design of the incineration facility, which are calculated through the heat exchange program, and the measured actual values (b) according to an operation of the incineration facility constructed under the design; and a server for extracting design values, measured actual values and operation values on the basis of data stored in the database and extracting and providing the design values, the measured actual values and the operation values as data including comparable graphs and tables.