The present invention relates to a traditional Chinese medicine preparation for assisting lung cancer chemotherapy, wherein the traditional Chinese medicine preparation comprises the following bulk drugs by weight: radix adenophorae, rabdosia rubescens, ophiopogon japonicus, dandelion, rehmannia glutinosa libosch, rhizoma imperatae, codonopsis pilosula, milkvetch root, cirsium setosum, sanguisorba officinalis l, lily, rhizoma anemarrhenae, portulaca oleracea l, pulsatilla chinensis (bunge) regel, paris polyphylla, rhizoma phragmitis, semen cassiae, plantaginis semen, tuckahoe, mulberry leaf, radix bupleuri, fructus cannabis, cortex lycii, sophora flavescens ait, desertliving cistanche, atractylodes macrocephala koidz, cynanchum glaucescens, chelidonium majus, ginkgo, licorice root, ginger and jujube. The preparation method comprises: soaking the bulk drugs, carrying out water extraction, collecting an extraction liquid, filtering the extraction liquid, concentrating to obtain a thick paste, adding sucrose powder to the thick paste, and preparing particles. According to the present invention, the traditional Chinese medicine preparation is used as the assisted medicine for radiotherapy and chemotherapy of lung cancer, and has effects of yin nourishing, lung moisturizing, heat clearing, detoxification, qi benefiting, blood enriching, intestine smoothing, constipation relieving, tumor inhibiting, and chemotherapy effect improving.