The present invention relates to a connection wire structure of a direct light bar and a connection method thereof. The connection wire structure of the direct light bar includes a plurality of light bars and connection wires, and a circuit board. Each light bar includes a wiring board that includes a first exposed copper zone that includes a hole to serve as a circuit connection contact. The circuit board includes a second exposed copper zone that includes a hole to serve as a circuit connection contact. Each of the connection wires has two ends to each of which a copper ring is connected. The two copper rings of each of the connection wires are respectively connected to the first exposed copper zones or the second exposed copper zones corresponding thereto by coupling pieces so as to establish electrical connection. A connection method of the direct light bar is also provided.