Fan system and air conditioners

The utility model provides a fan system and an air conditioner. The fan system comprises a bottom shell and a plurality of fans arranged on the bottom shell. Each fan comprises a fan body and an air duct rotating body, wherein the air duct rotating body is arranged on the outer side of the fan body in a surrounding mode, the center of the air duct rotating body and the center of the fan body are located on the same axis, and the air duct rotating body can rotate around the axis of the center and comprises a rotating portion with an opening. Air can be exhausted flexibly in different directions, the thinking model that air is exhausted only in one direction is avoided, and the requirement of users for diversification can be met.