The invention relates to a preparation method of a
plant-
enzyme-containing drink capable of improving a
respiratory system. The preparation method comprises the steps of adding water to soak and boil out malt, folium mori, fig, buckwheat, platycodon grandiflorum, rhizoma phragmitis, liqorice, dried
tangerine peel, poria cocos, lily, almond and purple perilla, carrying out low-temperature vacuum decompression concentration on decoction, blending black
sugar and peptone with the decoction, and disinfecting and filtering the mixture to obtain filtrate, namely a
nutrition solution; and inoculating probiotics to the
nutrition solution at 30 DEG C in a
fermentation tank, mixing and fermenting by four stages, and performing quality detection to obtain the drink. By taking various plants as a
nutrition solution culture medium and various composite probiotics as a conversion tool and adopting multistage deep liquefied
fermentation, toxic and harmful substances in the raw materials can be degraded to form new active ingredients,
nutrient elements in the materials can be released, effective ingredients, such as saccharifying
enzyme and
protease, can be produced in a
fermentation process, original active ingredients can be retained,
phytic acid is changed into functional
lactic acid and
acetic acid, and
insoluble fiber is changed into
soluble dietary fiber, so that the self
immunocompetence of a
human body can be effectively improved, and the diseases of the
respiratory system can be relieved and prevented.