The invention relates to a post-extraction process for preparing low acyl gellan gum having high solubility property, the process comprising the following steps: (1) enzyme treatment of fermentation broth； (2) flocculation of fermentation broth； (3) deacylation treatment； (4) clarification treatment of deacylated solution； (5) dehydration treatment of clarified and deacylated gellan gum solution； (6) ion exchange and decoloration treatment； and (7) drying and milling. The process according to the invention produces a product, which has largely improved solubility, largely improved quality, good appearance, high transparence, and high gel strength.
