The invention provides a preparation method of a cobalt selenide/graphite carbon composite material. With Co(NO3)2-6H2O, 2-methylimidazole, methanol and selenium powder as raw materials, through the preparation of a polyhedral metal organic framework compound ZIF-67, the cobalt selenide/graphite carbon composite material is prepared based on MOFs template construction. The ZIF-67 prepared by the invention is a rhombohedral dodecahedron, a framework has a small grain diameter controlled to be about 300nm and is uniform, the specific surface area is large, and the overall distribution is uniform. The composite material of the invention has high crystallinity and high specific surface area and porosity, the homogeneous distribution can be formed, the prepared framework has the small grain size, and the overall distribution is uniform. At the same time, the electric shock capacity is large, the service life is long, the lithium storage performance is excellent and is not degraded after upto 200 times of charging and discharging cycles, the stability of the use process is good, the current is not suddenly large and small, the purity of a product is high, the preparation method of the invention has high yield which can reach 70% or more, the preparation process is simple and feasible, and the method is worth marketing.