Increasing heavy steam criteria of thermal power units can not just greatly conserve gas yet also reduce CO2 exhaust undoubtedly. Normally, supercritical stress central heating boilers are specified as those whose major heavy steam outlet pressure is more than 22.0 MPa, and also those whose major vapor electrical outlet pressure is more than 28MPa or whose primary vapor as well as reheat heavy steam temperature are more than 580 Β° C. Data reveal that the parameters (3.5 Mpa, 435 β) to high parameter (9 Mpa, 535 β) can save gas 12% to 15%, boosting to high criterion as well as reheat in the middle of a (13.5 Mpa, 535 β/ 535 β), and can conserve fuel, 8% to supercritical specification and reheat in the middle of a (24 Mpa, 550 β/ 550 β) to conserve fuel by 8%, by 24 Mpa, 565 β to 565 β to 30 Mpa, 600 β/ 600 β, loved one efficiency can be enhanced by 4.5%,.