Abstract: Developed an continuous and automatic roasting process system and equipment with Android platform and ATMEGA328P embedded system through the optimization of temperature control model, heat transfer analysis and other technologies, Combined the research and development of compound heating system of infrared and electric heat pipes with conveyor system of synchronous chain, and then the process of continuous roasting was achieved by designing self-rotating skewer-roasting structure which can adapt to different diameters of skewers. Meanwhile a temperature control model based on the principle of heat balance was established for this roasting process, and the neural network PID algorithm which based on adaptive particle swarm optimization (PSO) was used to achieve the setting temperature controlling. And then the heat transfer characteristics, depth of radiation penetration and temperature distribution of the central section of infrared grilled meat products with different powers by using infrared thermal imaging technology, finally completed the development of Atmega328P single-chip microcomputer logic operation control system and Android terminal touch screen control interface, and the continuous grill results of meat products got from prototype process system was analyzed. The experimental results showed that The synchronous chain conveyor system and the spin mechanism were combined to reach the continuous roasting process, the plug-pull gripper can adapt to the skewer range of 2-6 mm in diameter which clamping force should not be less than 0.265 N, the skewing-rotation speed was 5.3 r/min when the conveyor system runs was programmed at 1m/min.The initial value of the temperature control model was optimized by the adaptive mutation optimization particle swarm optimization (PSO) algorithm, and the initial weight obtained was 0.044 2 and then the parameters of P=0.218 1, I=0.63, D=0.151 9 were acquired by the PSO algorithm optimized neural network PID model which control temperature upper and lower deviation were 2.4 and 2.7 ℃ when the grilling temperature was set at 160 ℃, the maximum deviation was 5.1 ℃ of this constant temperature system. Compared with the effects of different infrared heater when the roasting samples surface temperature reaches 100 ℃, we got the best baking of 2 000 W medium-wave infrared heater and acquired the gradient temperature difference between surface to center was 25℃ from infrared thermal imaging technology, in the meantime we got the depth of radiation heat tranfer penetration in meat was about 2 mm which similar to the heater of 2 500 W, the inner part of the meat samples heat transfer was mainly by conduction,on the other hand the nuclear magnetic resonance imaging (MRI) showed that the internal moisture content of the meat samples were better than the roasting effects of 1 000 and 1 500 W infrared heater. The core parts of automatic controls system was composed of embedded development system and temperature sensing module, motor driving module, bluetooth communication module,voltage self-setting module and relay control module,and the ATMEGA328P embedded control system acted accurately, and the Android touch screen control interface responsed rapidly. The shortest time of meat samples grilled by this equipment system was 6 minutes when the system power was designed to be 14 kW, and the yield of it was up to 1 200 strings/h. It provides a perfect technical reference for development of industrial and continuous skewer roasting equipments.