The existing tile making machine has a poor degree of mechanical integration and there are some problems with the stability of key structures.To solve these problem,taking a new type of building tile making machine as the study object,the main problems in the design of its structural parameters were determined,the mathematical model was used to analyze the physical characteristics of key structures.On this basis,the stability analysis of each key structure was carried out according to the principle of reliability interference.The analysis results prove that the structure of this new type of building tile making machine is reasonable.Its reliability is determined by simulation experiments.The research provides reference for lean design of key parts of building tile equipment.