Based on the electromagnetic theory and the work principle of electromagnetic parking brake，a new structure power breaker electromagnetic brake is designed，which is low energy consumption and embedded in in wheel motor，and a kind of analysis computation method is proposed. Through the analysis of magnetic circuit of electromagnetic brake，the mathematical model is established. A three dimensional finite element model is established via Ansoft software with the purpose of analyzing the electromagnetic property and work performance of electromagnetic brake，as well as simulating the dynamic work process of electromagnetic brake. By profoundly investigating the intricate internal magnetic field strength and power density distribution of the electromagnetic brake，the current research has obtained the exciting coil with time curve，electromagnetic force with work air gap curve and the armature displacement with time curve，etc. The conformity of the final simulation results with the experimental data indicates that the electromagnetic finite element method is accurate and reliable to analyze the electromagnetic property of electromagnetic brake，which can meet the requirements of sensitivity，reliability and specialization in electric scooter parking brake system.