Umbrella with air blowing device and method for realizing air blowing by using device

The invention provides an umbrella with an air blowing device and an air blowing method. The umbrella is provided with a central supporting rod assembly, a lower bracket, an umbrella stand and an umbrella cover, wherein the lower bracket and the central supporting rod assembly are sleeved and connected; the lower bracket is moved to drive the umbrella stand to open and close the umbrella cover; a battery is contained in a handle at the lower end of the umbrella; the air blowing device is arranged between the umbrella stand and the central supporting rod assembly; the air blowing device comprises an upper bracket, a support and a fan unit; the central supporting rod assembly of the supporting unit is provided with an annular groove for supporting a step bearing; a fan blade disc is fixedly arranged on a motor output shaft; a fan blade disc shaft part is inserted into a step bearing shaft hole and is fixedly connected with an inner side ring of the step bearing; a set of fan blades are clamped into vertical rib