The invention discloses a connected type convenient static floating device which is equipped with a three-way valve, wherein the three-way valve is connected with a plastic hose; the plastic hose is inserted into a main box; a temperature sensor is fixed in the middle of the main box; the temperature sensor is connected with a display screen. The connected type convenient static floating device is light-weight, low-cost, durable, convenient and quick to use and is an air collecting device fit for popularization; the main box is arranged as a cylinder and is free from corner angle, so that the main box is prevented from being crushed and scratched in a carrying process; the main box is made from toughening plastic; foam is served as filler of a middle interlayer; a light reflector is pasted on the exterior of the box; the temperature-insulating function is strong; the material is light; the weight of the device can be reduced, so that the device is convenient to float on the water surface and is convenient to carry; a digital display temperature meter on the box can accurately and quickly read the number; the floating plate not only can increase the buoyancy of the device, but also can keep the main box on the water surface balanced and can prevent the main box from being flushed by water flow.