The invention relates to a Chinese herbal immunopotentiator for chicken as oral liquid comprising the following raw materials in parts by weight: 4-5 parts of Echinacea purpurea, 2-4 parts of hoantchy root, 0.5-1.5 parts of rhodiola root, 1-3 parts of Dangshen and 0.5-1.5 parts of liquorice. The Chinese herbal immunopotentiator for chicken is prepared by the following steps of: crashing the raw materials, mixing, boiling with water for leaching, concentrating and encapsulating. The Chinese herbal immunopotentiator for chicken has better effects of reinforcing the disease resistance and the disease prevention of chicken and increasing immunizing power.