Huanglong walnut is a specialty of Huanglong County, Yan'an City, Shaanxi Province, and is protected as a national geographical indication product in China. Huanglong walnut is suitable for planting in mountainous areas and has high economic and medicinal value. Among them, Huanglong Walnut Kernel Xiangling: a new early-fruiting, high-quality walnut variety bred by the Shandong Provincial Fruit Tree Research Institute in 1978, and named after ministerial appraisal in 1989.

Huanglong walnut has a history of more than 2,000 years of cultivation in China. It is known as a "woody oil crop" and an "iron crop". It is an important economic tree species in mountainous forestry production. Huanglong walnut seed germplasm is pure and the fruit is It is plump in shape, large in size, thin in skin, light in color, crisp, sweet and delicious, and has a strong aroma. It is very competitive in the market.

There are 22 counties with a domestic output of over one million kilograms of Huanglong walnuts, including Yan'an. Huanglong County is one of them. Huanglong County currently has 176,000 acres of Huanglong walnuts, with an annual output of 20 million tons and an output value of more than 5 million yuan.

In Huanglong County, Huanglong walnuts grow at 20,000 yuan per year. The development speed of acres is increasing, the regional layout has been formed, and the base construction has begun to take shape. It has become the largest high-quality walnut commodity base in Shaanxi Province. Huanglong walnuts are large, thin-skinned, crisp and sweet, easy to extract, and free of insects and diseases. The fat content of nuts is 68.2%, the sugar content is 15%, and the unsaturated fatty acid content is 92.5%. In addition, Huanglong walnuts are rich in 19 kinds of amino acids and a variety of vitamins, calcium, iron, phosphorus, zinc and other trace elements. Abroad, it is known as "Hercules Food", "Nutritious Nut" and "Puzzle Fruit"; in China it is known as "Long Live Fruit", "Longevity Fruit" and "Treasure of Nourishing People"

Huanglong walnuts also have high medicinal value and are widely used in traditional Chinese medicine. Chinese medicine believes that Huanglong walnuts are warm in nature, sweet in taste, non-toxic, and have the functions of strengthening the stomach, nourishing the blood, moistening the lungs, and nourishing the mind. September 27, 2008. At the first China Walnut Conference held in Dayao, Yunnan, the two walnut varieties grown in Huanglong County, Xiangling and Shaanhe No. 5, won gold and silver awards respectively.

In September 2008, the county dried fruit company. The registered Shenglong walnut trademark was recognized as a famous trademark of Shaanxi Province by the Shaanxi Provincial Administration for Industry and Commerce.

In 2009, the Huanglong walnut geographical indication product protection passed the expert review organized by the State Administration of Quality Supervision (Huanglong Walnut Geographical Indication). The scope of product protection is the current administrative area of ??Huanglong County, Yan'an City, Shaanxi Province).

In 2001, Huanglong County was named the "Hometown of Walnuts in China" by the State Forestry Administration, and was later approved by the General Administration of Quality Supervision, Inspection and Quarantine. National Dwarf Walnut Standardization Demonstration Area".

In 2009, Huanglong County was identified as one of the province's walnut science and technology demonstration core areas.

Huanglong walnuts have also obtained China's organic product certification. Obtained the National Geographical Indication Product Protection Certification and Shaanxi Provincial Famous Trademark. Experts commented that Huanglong walnut standardized management can participate in international cooperation and exchanges on behalf of the national level.