The present invention relates to an artificial biomembrane and a method for manufacturing such an artificial biomembrane. The beneficial microbial strains, authorized for use in the nation, are concentrated after fermentation. Film-forming raw materials in the water, such as polyvinyl alcohol, sodium alginate and sodium carboxymethyl cellulose, are dissolved into glue liquid, into which the mixture of coal-based activated carbon powder, diatomaceous earth powder sodium acetate and single strain or multiple strains of microbial cells are added. The glue liquid are set into the spray device that is pressed to spray, such that fogdrops are landed on powder beds or fluidized beds for immobilization to form artificial biomembranes. The artificial biomembranes can be manufactured by mechanization and large-scale production, with simple process of immobilization, high efficiency and low cost. In the biomembrane, the cell density is high and the period of validity is long, with good mass transfer performance and stability. The artificial biomembranes can be applied to ecological restorations and treatments of different water environments in pollution, such as industrial wastewater, sewage, fishing water, landscape water, flowing water and the like.