The invention discloses green and environment-friendly mine hydraulic support liquid which is prepared from mineral base oil and an additive, wherein the additive is prepared from the following ingredients of fatty acid, alkyl amine, diethylene glycol monobutyl ether, an emulsifier, benzotriazole, EDTA tetrasodium, alcohol amine, a water-based antirust agent, sodium hydroxide, a sterilizing agentand a defoaming agent. Preferably, a recommended use concentration is 4 to 5%V/V. The green and environment-friendly mine hydraulic support liquid disclosed by the invention has the advantages of transparent appearance, no odor, no volatile substance, no harmful substance of sodium nitrite, heavy metal and the like, ability in preventing the body of a worker from being damaged, greenness and environmental friendliness; by means of the concentration adjustment, the green and environment-friendly mine hydraulic support liquid can be suitable for different work qualities; furthermore, freeze thawing resistance is excellent, a mine long wall mining requirement can be met, use cost is lower, petroleum resources are saved, and environmental pollution is reduced; the green and environment-friendly mine hydraulic support liquid is a very good emulsified oil replacing product, can be widely applied to coalmine production and has obvious economical benefits and social benefits.