IoT (Internet of Things) multifunctional mobile POS (point of sale) and transaction payment system

The invention is applicable to the field of electronic payment, and provides an IoT (Internet of Things) multifunctional mobile POS (point of sale) and a transaction payment system. The IoT multifunctional mobile POS comprises a main control module, an input module, an LCD (liquid crystal display) module, a communication module and a card reading module, wherein the input module, the LCD module, the communication module and the card reading module are connected with the main control module respectively. According to the communication module of the mobile POS, corresponding network interfaces in the communication module can be selected for wireless AP (access point) network services for communication with a background server according to detected network signals, the POS can be applied to various transaction occasions such as shopping malls, restaurants, outgoing settlement and the like, and the mobility and the local area network anomaly resistance of the mobile POS are improved.