Waterproof structure of electric component, electric-component module and dynamic balance vehicle

The utility model discloses a waterproof structure of an electric component, an electric-component module and a dynamic balance vehicle. The waterproof structure includes a waterproof cover, a first waterproof unit and a second waterproof unit. The first waterproof unit is arranged between the waterproof cover and the electric component. Line passing units are arranged in the first waterproof unit and the waterproof cover. The second waterproof unit seals a position, where the electric component is connected with another electric component through a line passing unit. The waterproof structure and another device are respectively arranged at the two side faces of a housing of a product which uses the electric-component module. A line passing unit is arranged in the housing. Through the line passing unit arranged in the housing and the line passing units arranged in the first waterproof unit and the waterproof cover, the other electric component is electrically connected with the electric component.