The invention discloses a strain for generating pullulan. The strain is a strain which is obtained from plant leaves and does not generate melanin. The classification and nomenclature of the strain is Aureobasidium pullulans HL-1 as a Latin name. The preservation number of the strain is CGMCC (China General Microbiological Culture Collection Center) No.10772. A method for producing the pullulan by fermenting the strain is simple and feasible; a product is high in conversion rate so as to facilitate later-stage separation and purification.