. This topic examines the syndrome differentiation and treatment of internal injuries and fever. The syndrome of internal injury and fever is that qi stagnation turns into fire and liver stagnation turns into fire. Treatment: soothing the liver and relieving depression, clearing the liver and purging fire. Representative: Danzhi Xiaoyao Powder. Commonly used drugs: Bupleurum, mint, turmeric, Rhizoma Cyperi preparata-soothing liver and relieving depression, Angelica sinensis, Radix Paeoniae Alba-nourishing blood and softening liver, Atractylodes macrocephala, Poria-invigorating spleen and eliminating dampness, Cortex Moutan and Gardenia-clearing liver and purging fire; Addition and subtraction: If excess heat injures yin, but the tongue is red with little fur and the pulse is rapid, remove the warm dryness of Angelica sinensis, Atractylodes macrocephala and ginger in the original prescription, and add Radix Rehmanniae, Radix Ophiopogonis and Rhizoma Dioscoreae as appropriate to nourish yin and strengthen the spleen, or use Zishui Qinggan drink to nourish yin and clear fire.