1. Bird's nest has the effects of nourishing beauty, invigorating qi, nourishing lung and enhancing immunity. Bird's nest contains extremely high nutrients and many trace elements which are beneficial to human body. Eating bird's nest is helpful for beauty, nourishing blood and promoting blood circulation, making the body full of vitality, regulating endocrine, maintaining the perfection of immune system and enhancing resistance.

2. Bird's Nest refers to a nest built by saliva secreted by some Swifts of Swift Family of Swift Order and several Jin Siyan species of Swift genus, and then mixed with other substances. Also known as Swallow Vegetable, Swallow Root and Swallow Vegetable, bird's nest can be divided into "House Swallow" and "Cave Swallow" according to the nesting place. Cave Swallow has different colors due to the influence of minerals, including Bai Yan, Yellow Swallow and Red Swallow, while House Swallow has only one color of ivory. Bird's Nest is one of the traditional precious foods that have been eaten in China since the Ming Dynasty. The so-called "blood swallows" on the market are said to be made by artificially cultured house swallows through "bird droppings".