The invention discloses a partition wall plate steam curing method and a steam curing method for concrete products, and relates to the technical field of concrete curing. According to the partition wall plate steam curing method, to-be-cured partition wall plates are bundled and then placed in a curing chamber, temperature control is conducted through an oil delivery pipeline for heating in the curing process, steam is introduced through a steam pipeline for humidity control, the temperature and humidity can be precisely controlled, meanwhile, adjusting and controlling of the humidity are notaffected by controlling over the humidity, and thus operation flexibility is high; and temperature control in the curing process is divided into three times of temperature increasing, the great curingeffect is obtained, finally, it is ensured that the water content on the surface of a component after natural temperature decreasing reaches the specified requirement, repeated detecting is avoided,and the time and labor are saved. The steam curing method for the concrete products comprises the partition wall plate steam curing method, the flexibility of temperature and humidity control can be significantly improved, and the temperature control precision is high.