The ancient method of making moxa is still applicable in modern times. Three years of aged mugwort leaves, picked during the Dragon Boat Festival. In the making of the time after pounding, kneading, sieving, sunshine, dozens of hundreds and thousands of times, it is made. Ancient moxa velvet tends to be puffy and fine and soft as cotton full of energy, and moxa on the surface of the human body to do gentle therapeutic stimulation.

The ancient method of making moxa velvet processing should strive to be natural and fine. The collection of moxa leaves fully sun-dried, put in a stone mortar, repeatedly pounded and crushed, so that the fine as cotton wool, sieve off the dust, coarse stalks and impurities, it became a light yellow, clean and soft pure moxa velvet. Generally speaking, there are two kinds of moxa velvet: with the above method of shelling for coarse moxa velvet, every 500 grams of moxa leaves can get 350 grams of moxa velvet, suitable for general moxibustion; such as fine processing, after dozens of days of sunshine pestle and mortar, sieve picking dozens of times, 500 grams of moxa leaves only get moxa velvet 50 grams of moxa velvet, into the earthy yellow color, fine moxa velvet, can be used in the direct moxibustion method.

In addition, the year of the newly harvested Ai and the storage of the old Ai also has a difference, the new Ai moxibustion fire strong burning pain, the old Ai moxibustion fire gentle and moxibustion, moxibustion is obvious, the efficacy is good. Li Shizhen pointed out: "Wherever you use moxa leaves, you need to use the old one." So moxibustion should be selected with the old moxa, which is also repeatedly emphasized by generations of medical doctors.