The invention discloses an application software updating method which comprises the following steps: acquiring a first character string according to a polling request; obtaining an update package according to the first character string; and distributing the update package to a packet server, wherein the deployment environment of the packet server comprises a test environment, a standard environment and a production environment, and the first character string comprises a version ID, a version number, an update package file size, an update package downloading address, an MD5 value and update time. According to the application software updating method, through a polling request of the packet server, the updated server has an updated monitoring function, and through information returned by anupdate package management system, local deployment of an update package is completed according to different deployment environments; according to the scheme, automatic synchronization and deployment work is achieved, and the problem that update package operation and maintenance work is complex and tedious is solved, and a safer and more efficient update package operation and maintenance mechanismis provided, and the application software updating method can be widely applied to the technical field of communication.