The invention discloses a meat, vegetable and egg deep-fried dough stick and a preparation method thereof, and aims at enabling the deep-fried dough stick to have rich nutrition. The fruit and vegetable vegetarian deep-fried dough stick comprises wrapper and filling according to the mass ratio of (1-4):(1-4), wherein the wrapper comprises the components by weight parts: 58-60 parts of wheat flour, 1.2-3.2 parts of yeast, 0.8-1.5 parts of table salt, 2.3-3.1 parts of whey protein, 2.7-3.5 parts of glutamine transaminase and 33-34 parts of water; and the filling comprises the components by weight parts: 2.5 parts of lean meat, 0.5 part of eggs, 1.25 parts of vegetables, 0.125 part of salt, 0.25 part of yellow wine, 0.5 part of white sugar, 1.25 parts of peanut oil and 0.25 part of soy sauce. The preparation method of the meat, vegetable and egg deep-fried dough stick comprises the following steps of: blending, kneading dough, leavening, cutting, tabletting, preparing the filling, wrapping the filling by the wrapper, and frying. Compared with the prior art, the preparation method can be used for realizing the industrial processing of the deep-fried dough stick; and the deep-fried dough stick is crisp and delicious in surface layer and soft and tasty in interior, thus not only meeting the demands of people on taste, but also being rich in nutrition.