The invention relates to a medicine for treating insufficient blood supply of a brain. The invention relates to the medicine, which is prepared by the following raw materials by weight portion: 7 to 11 portions of rhizoma gastrodiae, 8 to 16 portions of Chuanxiong rhizome, 22 to 38 portions of Salvia miltiorrhiza, 10 to 20 portions of radix cyathulae, 10 to 20 portions of figwort, 8 to 16 portions of herbaceous peony roots, 8 to 16 portions of safflower and 7 to 11 portions of peach seeds. When the medicine is manufactured, 800 to 1,200 portions of water are added into the raw materials for immersion of 30 minutes; the mixture is boiled by strong fire and cooked by slow fire for 30 minutes; and the medicine is obtained after taking cooking liquor. The medicine has the advantages that: the medicine is convenient to take; patients do not have the phenomena of lethargy, fatigue and weakness, thereby the work of the patients is not affected; the healing effect is definite; no obvious side effect exists; and the cost is low.