The production of preserved plum is the ripe yellow plum after picking mango seeds, commonly known as Huangmei. Picking Huangmei from the tree, washing, soaking in salt water in a vat, and then taking it out to dry; After drying, rinse with clear water, and then dry; Then pickled with sugar, and then dried in the sun-so repeatedly, it can be said that "ten steaming and nine drying, one plum in a few months", and finally become a plum with crisp meat and moderate sweetness and sourness. This kind of plum can be preserved for several years if it is well preserved, moisture-proof and moth-proof.