The invention provides a carbon-coated cobalt sulfide material as well as a preparing method thereof and application of the carbon-coated cobalt sulfide material as a catalyst in the aspect of hydrogen production through the electric catalytic cracking of water and belongs to the fields of catalyst synthesis technologies and application. An organic matter rich in sulfur is used as a sulfur source and a carbon source, a cobalt salt is used as a cobalt source, the organic matter and the cobalt salt are forged in an inert atmosphere after being mechanically mixed uniformly, and the carbon-coated cobalt sulfide material can be obtained. The preparing method is simple and controllable, adopts cheap raw materials, has good sample repeatability, spends short time in the synthesis process, has low requirements on equipment and is suitable for massive production. As an active substance is effectively protected by a carbon coating layer from electrolyte corrosion, the electric conductivity of the material is improved, and accordingly, the material shows excellent hydrogen production electric catalysis performance in acid, neutral as well as alkaline electrolytes. The most important is that the development of the catalyst capable of being used in the whole pH range opens a novel path for the preparation of a cheap, efficient and environment-friendly non-noble metal electric catalysis material for hydrogen production.