In order to master the basic laws of preparation coating by electrical explosion spraying technology and obtain coating with higher mechanical properties, finite element analysis software is used to simulate temperature field in process of coated condensation. Some basic rules of process parameters are drawed. To obtain high-performance coatings, coating material whose sedimentary particle has a higher interface temperature is first considered according to the substrate material property parameters. In the process of prepare coating, voltage should be better to use peak Voltage of electric explosion spraying equipment. Self-inductance of circuit should be as low as possible.