The invention provides a method for preparing regenerated fruit cultivating bagging outer bag paper by using waste fruit cultivating bagging paper. The method comprises the following steps: cutting up the recycled waste fruit cultivating bagging paper, then adding boiling water, adjusting pH value, adding Al2(SO4)3, soaking, pulping, adding carbon black powder and grinding, thus obtaining paper pulp A; injecting the paper pulp A into a machine chest A, storing paper pulp prepared from fiber raw materials in a machine chest B, respectively adding fillers, sizing agents, water repellent agents and wet strength agents to the machine chest A and the machine chest B and uniformly stirring; and making and forming paper by using the paper pulp in the machine chest A and the machine chest B, laminating, forming, squeezing, dewatering and drying. The method has the advantages that the usage amount of raw wood pulp can be greatly saved, after pulp grinding treatment, the binding force between the carbon black and fibers in the paper pulp is still strong, as long as little carbon black is added, the high non-transparency requirements can be satisfied, and therefore, the problem that when lots of carbon black is applied in in-pulp dyeing, poor working environments of production workshops, the low utilization rate of the carbon black, the high production cost and the like are caused, is solved.