The invention discloses a multifunctional intelligent detection device which comprises an infrared detector used for detecting environmental data and transmitting the environmental data to a mobile terminal, an infrared transponder used for receiving a control signal emitted by the mobile terminal and converting the control signal into an infrared signal, an air quality detector used for detecting air quality data and transmitting the air quality data to the mobile terminal, and a charging base which is used for charging the infrared detector, the infrared transponder and the air quality detector and is internally provided with charging pins and magnets for fixing the infrared detector, the infrared transponder and the air quality detector to preset positions. The infrared detector, the infrared transponder and the air quality detector are connected to the charging pins through charging interfaces, the environmental data is detected through multiple detecting terminals and is sent to the mobile terminal to carry out unified display and control, the linkage property of the intelligent detection device is improved, each intelligent detection module is fixed through a magnetic attraction mode, the space is saved, and inconvenience of wired layout is reduced.