The invention discloses a processing technique of sweet and sour Morchella esculenta, belonging to the food processing field. The processing technique is characterized in that the formula is as follows: 36kg of Morchella esculenta, 2.3kg of table salt, 40kg of rice vinegar, 25kg of brown sugar, 6kg of rock candy, 35g of malic acid and 85g of calcium chloride; the processing technique comprises the following flows: trimming the raw material, blanching, hardening, dipping in a sugar and vinegar mixture, performing cylinder pressing, and packaging. The processing technique has the beneficial effects that the sweet and sour Morchella esculenta is amber, is tender and tough in texture, is sweet and sour in taste, has special flavor, is rich in nutrition, has the efficacy on benefiting intestines and stomach, promoting digestion, reducing blood sugar level, tonifying kidney, strengthening yang, boosting brain and refreshing, has a function of enhancing the immunity of human body, and is a pure natural health product without side effect; and besides, the method can be operated simply and can be realized easily.