An adjusting and control method for 3D printing precise shape forming of instant recuperation mashed potato relates to the field of new food processing technologies. First, a potato is cleaned, peeled, and sliced to be steamed. Subsequently, the steamed potato slices are pulped until a pulp is smooth and shiny. A colloid is added, and after mixing the pulp with the colloid, the mixture is steamed to cook the potato and fully dissolve the colloid. After the mixture is cooled to room temperature, white chocolate powder is added to the mixture. To implement refined printing of recuperation mashed potato, printing temperature, a moving speed of the nozzle, a discharging speed and so on are selected and determined to perform printing. Precision of a print object may reach more than 95%, and the object does not collapse within 40 min to 60 min after being printed.