The invention provides a dynamic electrocardiogram synchronous aided diagnosis system of a mobile phone. The system comprises a wireless electrocardiographic module and an intelligent mobile phone, wherein the intelligent mobile phone has a GPS (Global Positioning System) positioning function, a barometer function and a three-axis acceleration sensing function and is loaded with dynamic electrocardiogram aided application software; the wireless electrocardiographic module is connected with the intelligent mobile phone via wireless communication; the intelligent mobile phone is in communication connection with a remote server, which is used for receiving and storing a synchronous dynamic electrocardiographic signal for clinical assistant diagnosis; and the intelligent mobile phone comprises a GPS information processing module, a barometer module, a three-axis acceleration sensor module, a timing module, a motion behavior judging module, a database recording module and a data communication module. The dynamic electrocardiogram synchronous aided diagnosis system of the mobile phone, provided by the invention, has the advantages of good reliability, good synchronous effect and convenience in later accurate diagnosis.