The authenticity of Poria can generally be identified by the texture, taste or laboratory testing of the herb. Such as fake Poria is generally a small square, its surface color is not uniform, and occasionally see mold spots; while the real Poria texture is more delicate, and generally does not appear moldy. 1. Taste: Fake Poria is faint, slightly accompanied by sweetness in the mouth; while the real Poria is generally no sweetness, bland taste. 2. Laboratory tests: false Poria can be seen under the microscope test fungal hyphae and starch particles, starch particles are small and irregular, take the appropriate amount of medicine drops of iodine will become light blue; while the real Poria can be seen in the optical microscope a large number of fungal hyphae and does not contain starch, drops of iodine will not appear obvious color changes. If you need to buy Poria, it is recommended to consult a doctor, under the guidance of the doctor for scientific treatment.