Fuente: Wipo "BigData" The utility model discloses a big data server which comprises a server case and a cooling cylinder, the cooling cylinder is formed by laying a cooling pipeline, and the cooling cylinder is arranged in the server case and attached to the inner wall of the server case; the supply mechanism is used for conveying cooling liquid and is arranged on the server case, the output end of the supply mechanism is communicated with the input end of the cooling pipeline, and the input end of the supply mechanism is communicated with the output end of the cooling pipeline; and the heat conduction cylinder is arranged in the server case, and the outer wall of the heat conduction cylinder abuts against the inner wall of the cooling cylinder. According to the heat dissipation device for the big data server, heat in the server case is evenly adsorbed and dissipated, efficient heat dissipation of the big data server is achieved, and the heat dissipation device for the big data server has the advantages of prolonging the service life and improving the heat dissipation efficiency.