Immature bitter orange extract, preparation and application

The invention discloses an immature bitter orange extract, a preparation and an application, belongs to the field of a traditional Chinese medicine, and particularly relates to an immature bitter orange extract and a medicinal preparation containing the extract. The immature bitter orange extract can be used for preparing a medicine for preventing or treating obesity. The immature bitter orange extract, which is obtained by adding a small amount of rhizoma anemarrhenae medicinal material into an immature bitter orange medicinal material, has a significant effect of treating the obesity, and has an unexpected effect in comparison with a single immature bitter orange extracting method. Based on the sufficient and reasonable design, the immature bitter orange extract with a significant effect can be obtained by extracting, denominating and enriching ethanol water with proper concentration.