The invention relates to a phlegm-dampness constitution composition, a preparation method and applications of the composition. Crude drugs are extracted and purified by adopting a semi-bionic extraction method and an ultrasonic method, and active ingredients are retained effectively to prepare the composition. The phlegm-dampness constitution composition has the effects of promoting the circulation of qi and reducing phlegm, and invigorating spleen to eliminate dampness, and has special curative effects on the phlegm-damp symptoms.