Fan blade structure of invisible fan lamp

The invention discloses a fan blade structure of an invisible fan lamp. The fan blade structure comprises a fan base plate and a plurality of fan blade assemblies; a fan assembly comprises a rotatingpiece and blades, and the rotating piece and the blades are hinged to the fan base plate; each blade comprises at least two sub blades; after a fan is folded, the adjacent blades are not overlapped; each blade comprises two or more sub blades, and the quantity of all the sub blades is at least six, so that under the condition that the product is kept to be low in cost and attractive, the number ofthe sub blades is increased, air blowing out is quite gentle, and generated noise is low; during rotation of the fan, the number of blade stress points in the air blowing process is large due to thelarge number of sub blades, blowing wind power is high, and the fan has good balance; and in addition, height difference exists between the sub blades of each blade, so that the fan is capable of generating circulating helix ai