A method of recycling waste liquid from a plate-making process for a photosensitive planographic printing plate that is discharged by a plate-making process for a photosensitive planographic printing plate using a developer liquid for a photosensitive planographic printing plate in an automatic developing machine, the method comprising: replenishing a development bath of the automatic developing machine with a development replenisher liquid without dilution or after dilution of the development replenisher liquid with an amount of water no more than 10 times an amount of the development replenisher liquid in terms of mass, the development replenisher liquid including an organic solvent having a boiling point in a range of from 100°C to 300°C, and a content ratio of organic solvent having a boiling point in a range of from 100°C to 300°C in the development replenisher liquid being in a range of from 5% by mass to 30% by mass; concentrating plate-making process waste liquid, which has been generated during a plate-making process for a photosensitive planographic printing plate in the automatic developing machine, by evaporation using an evaporation concentration apparatus such that a ratio of an amount of the plate-making process waste liquid after the concentrating, to an amount of the plate-making process waste liquid before the concentrating, is in a range of from 1/2.5 to 1/5 in terms of volume, thereby separating the plate-making process waste liquid into water vapor and dissolved components; recovering the separated water vapor from the evaporation concentration apparatus and condensing the water vapor in a cooling means to obtain regenerated water; and using the obtained regenerated water as at least one of diluent water for the development replenisher liquid or rinsing water in the automatic developing machine. replenishing a development bath of the automatic developing machine with a development replenisher liquid without dilution or after dilution of the development replenisher liquid with an amount of water no more than 10 times an amount of the development replenisher liquid in terms of mass, the development replenisher liquid including an organic solvent having a boiling point in a range of from 100°C to 300°C, and a content ratio of organic solvent having a boiling point in a range of from 100°C to 300°C in the development replenisher liquid being in a range of from 5% by mass to 30% by mass; concentrating plate-making process waste liquid, which has been generated during a plate-making process for a photosensitive planographic printing plate in the automatic developing machine, by evaporation using an evaporation concentration apparatus such that a ratio of an amount of the plate-making process waste liquid after the concentrating, to an amount of the plate-making process waste liquid before the concentrating, is in a range of from 1/2.5 to 1/5 in terms of volume, thereby separating the plate-making process waste liquid into water vapor and dissolved components; recovering the separated water vapor from the evaporation concentration apparatus and condensing the water vapor in a cooling means to obtain regenerated water; and using the obtained regenerated water as at least one of diluent water for the development replenisher liquid or rinsing water in the automatic developing machine.