Nianju Mandarin, also known as small leaf orange, single fruit weight 50-60 grams, soluble solid 12-14%, acid content 0.7-0.9%, is people take the head of the festival, auspicious gifts. Nian orange is a subtropical evergreen fruit variety, like warm and humid, afraid of cold, has a strong shade tolerance, strong stress resistance, tolerant of extensive cultivation, fruit tree life of more than 20 years, early harvest, maturity period of 1-2 months, during the Spring Festival, so named "Nian orange", also called "big orange "(Great).

The orange fruit is large and beautiful, golden in color, bright and delicious, with unique flavor. The flesh is rich in vitamin C, citric acid and sugar. Fresh fruit consumption has phlegm to relieve cough, clear the heart and moisten the lungs, beauty, promote digestion, for people who smoke and drink too much or stay up late to eat can refresh the brain and other functions, the peel can be made of orange peel, has medicinal value. Can also be processed into canned, fruit juice, jam, orange cake and other products.