The invention discloses a heat-work conversion and dispatching optimization decision-making assisting 
system and a heat-work conversion and dispatching optimization decision-making assisting method for a complementary DMG (distributed multi-generation) 
system. The heat-work conversion and dispatching optimization decision-making assisting 
system comprises a fuel characteristic parameter module, a 
combustion adjustment experimental module, a reference pattern module, a 
heat balance and consumption quantity computing module, a 
combustion condition adjustment and management module, a heat-work conversion management module, a variable-working-condition 
signal transmission module, a full-working-condition operation parameter management module, a 
district cooling network circulation mode module, an energy efficiency and environmental benefit evaluation module and a dispatching optimization and decision-making assisting management module. The heat-work conversion and dispatching optimization decision-making assisting system and the heat-work conversion and dispatching optimization decision-making assisting method have the advantages that 
district cooling network circulation match is achieved flexibly for a multi-heat-
source system different in temperature to construct the complementary DMG system with multi-energy-source input and multi-product output, and high flexibility and advancement are achieved; an advanced system for 
process engineering is applied to production device design, steady-state 
simulation and optimization, 
sensitivity analysis and 
economic evaluation of a whole process of the complementary DMG system, so that accurate and timely dispatching optimization and decision-making assisting are achieved.