A method of downloading application programs on the editing system platform of an electronic communication apparatus, includes the step of connecting an electronic communication apparatus to the Internet, the step of driving an editing system of a processor of the electronic communication apparatus to define a total area from a memory thereof for use by the application programs to be downloaded from the Internet, for enabling the application programs to be stored in any address within the total area, the step of driving the editing system to directly correct the operating instruction of direct address searching to the correct address when downloading an application program from the Internet and then to search the address after address correction, and the step of using a software interrupt (SWI) to alternate the operating instruction of indirect address searching so as to obtain the desired correct address for the editing system for further indirect address searching operation.