Disclosed are a traditional Chinese medicine composition for treating tumours and a preparation method therefor, wherein the composition is prepared from Sophora flavescens, wild chrysanthemum flower, honeysuckle, mint, Poria cocos, Atractylodes lancea, cinnamon, clove, Astragalus, Ganoderma lucidum, Ligusticum striatum, Aucklandia root and Radix glycyrrhizae. The traditional Chinese medicine composition has an anti-tumour effect.