The invention relates to a processing method of a Pleioblastus amarus tea, and belongs to the technical field of Pleioblastus amarus processing. The processing method comprises the following steps: 1, carefully choosing a Pleioblastus amarus raw material; 2, cleaning and shelling; 3, scalding; 4, dicing; 5, lyophilizing; 6, roasting; 7, cooling; 8, sorting; and 9, packaging. The Pleioblastus amarus tea is suitable for most people, is convenient, and can be added with water to obtain a tea for drinking; and sugar or honey can be added to the Pleioblastus amarus tea when drunk, has no influences on the dissolve-out of substances, and has no influences on the health function characteristic of the Pleioblastus amarus tea. The Pleioblastus amarus tea has a slight bitter soup, a delicate fragrance and a tasty taste, has the medical efficacies of digestion promoting, heat clearing, vexation eliminating, fatigue eliminating, humidity eliminating, water retention alleviating, blood vessel protecting, ageing resisting, tumor resisting, lipid lowering, fat reducing and the like, and has the effects of bacteriostasis, anti-virus, anti-oxidation and radiation resistance.