Canavalia maritima is a magic bean, also known as Brazilian bean. It is an annual twining herbaceous vine belonging to the genus Canaria in Leguminosae. The vine is 3-5 meters long, with three compound leaves, and new branches sprouting at the axils of each leaf. The flowers are white or purplish red, with spikes, 2-5 pods per spike, 25-33 cm in length, 4-7 seeds in red, very beautiful, with a thousand-grain weight of 3,500 grams and tender yield per mu.

The tender pod of magic bean is rich in nutrition, which can be fried, pickled and made into pickles. It is one of the vegetables exported to earn foreign exchange because of its crisp texture, thick meat and fresh taste. The seeds are big and full. After laser engraving, they are made into "Magic Bean" series pet flowers in cans. After watering the cans, the blessing sentences such as "I love you" and "Happy Birthday" can be clearly seen on the douban, which has become the new favorite of the flower market. Its seeds are also commonly used traditional Chinese medicines, which have the effects of warming the middle warmer and lowering qi, invigorating kidney and qi, benefiting the stomach, stopping hiccups and treating cough. Magic beans can be planted easily without breaking the soil. They can be sown at any time in February-July in the south and April-May in the north. 300-400 kilograms of dried beans can be harvested per mu. According to the current market price of 20 yuan/kg, the output value can reach 5,000-8,000 yuan, and the economic benefits are very considerable.