Abstract: Provided is an adaptive IoT service system employing a removable hardware module. The system includes a peripheral device control module, a management server, an application program configuration manager, and a user terminal. The peripheral device control module is configured such that a control board thereof for controlling a corresponding one of IoT devices is mountable to and removable from a mainboard thereof. The management server relays real-time data transmitted from IoT devices, cumulative data, and type information to the user terminal, and relays and manages the data and information. The application configuration manager automatically constructs a user interface of the user terminal on the basis of the data managed by the management server. The system constructs a user interface in real time and automatically associates the IoT device with the application program in the user terminal.