The invention relates to a mobile phone assembling machine. A mobile phone support is respectively provided with a loading and unloading component, a feeding component, a FPC component, an assembling component, a vision inspection device, a film drawing component and a pressure maintaining component. The loading and unloading component respectively grabs a mobile phone screen and a mobile phone shell and then puts the mobile phone screen and the mobile phone shell into a positioning jig of the feeding component for positioning and fixing, the FPC component bends a mobile phone screen circuit board small film and then sends the small film to an assembling position, the mobile phone screen is assembled and clung to the mobile phone shell under the combined action of the assembling component, the vision inspection device and the film drawing component and then enter the pressure maintaining component for pressure maintaining and stabilizing, and then the loading and unloading component realizes unloading. The assembling machine is simple in main structure and high in automation degree, and not only can complete the operation of assembling of the mobile phone screen and the mobile phone shell, but also can greatly improve the working efficiency.