The invention belongs to the technical field of food, and particularly relates to a preparing method for novel flavor Lao Tan pickled vegetables. The preparing method includes the steps that 1, a low-salt lactobacillus liquid pickled vegetable saline solution is prepared; 2, an aged pickled vegetable solution is prepared; 3, the aged pickled vegetable solution is concentrated at low temperature ina vacuum mode; 4, salted leaf mustard is prepared; 5, material stirring is conducted, wherein the salted leaf mustard is placed into the concentrated aged pickled vegetable solution, and chopped pickled peppers, chopped pickled ginger, gourmet powder, cane sugar, sesame oil, lactic acid, I+G and ethyl maltol are added and stirred uniformly; 6, the novel flavor Lao Tan pickled vegetable product isobtained through packaging, sterilizing and cooling. The method is simple in operation technology, unique flavor generated by the pickling technology of the pickled vegetables and specific taste generated by the salting technology of the salted pickled vegetables are combined, the prepared product has yellow brown color and luster, has lactic fermentation flavor of traditional Lao Tan pickled vegetables and sauce flavor of the salted pickled vegetables, has lasting and mellow taste and is fresh, tasty and refreshing, and the tart flavor is comfortable for people.