The invention relates to a rhizoma polygonati beverage and a preparation method thereof. Every 500ml of the rhizoma polygonati beverage contains 4-6.36% of rhizoma polygonati extract, 5-8% of fruit extract, 1-3% of
bean extract, 1-1.64% of traditional Chinese medicinal material extract, 2% of honey and the balance of
purified water. A rhizoma polygonati extract, a traditional Chinese medicinal material extract, a
bean extract and a fruit extract which are used for relieving
summer heat and relieving fatigue are further prepared in a basic formula of the rhizoma polygonati beverage, and the rhizoma polygonati beverage is nutritional soup for tonifying
summer heat and relieving fatigue and has the effects of tonifying qi, clearing heat, driving away
summer heat, promoting salivation and relieving summer heat by mixing the extract raw materials, so that the effects of improving the body
immunity, relieving fatigue and the like are achieved. The health-care tea has the effects of refreshing, relieving fatigue, promoting salivation,
quenching thirst, improving eyesight, maintaining mental tranquility and tonifying qi, can improve the poor state of the body and relieve fatigue and
tuberculosis of the body, and has the effects of resisting oxidation, improving memory and relieving qi deficiency.