Egg fruit (scientific name: Passiflora edulia Sims), also known as passion fruit, is a herbaceous vine of the genus Passiflora in the Passifloraceae family, ca. 6 m long; stems finely striped, glabrous; petals 5, as long as the sepals; light green at base, purple in the middle, white at the top, berry ovoid, 3-4 cm in diameter, glabrous, purple when ripe; seeds numerous, ovate. Flowering in June, fruiting in November.

Eludes the jungles of valleys at altitudes of 180 to 1900 meters. It is native to the Antilles and widely planted in tropical and subtropical areas. There are two main categories: purple fruit and yellow fruit. Plant life expectancy is about 20 years, and economic life expectancy is generally 8 to 10 years.

The fruit can be eaten raw or as vegetables and fodder. The medicine has the effect of excitement and strength. The pulp is juicy and can be added to calcium bicarbonate and sugar to make a flavorful drink, and can also be used to add in other drinks to improve the quality of the drink. The seeds are pressed for oil, which can be used for food and for making soap and paint. The flowers are large and beautiful, without fragrance, and can be used as ornamental plants in gardens. In other regions outside of China, the egg fruit has a "king of juice", "money tree" and so on.