The aim of the design is to achieve ZnO Yamin resistance by sintering furnace temperature control.Mcs-51 SCM(单片机) is used as the parts of the apparatus for design core.It has the constant temperature of keyboard input,LED digital temperature and temperature control that limits reminded operators attention to the function.The limited temperature for giving a alarm can be free to set.The article mainly discusses the hardware part of the design ideas and the ways of its realization.