The invention discloses an all-plant beverage free of edible sugar and chemical additives and a production method thereof. The all-plant beverage is produced by of 5000-10000 parts of pure water, 5-50 parts of stevia rebaudiana leaves, 2-20 parts of siraitia grosvenori, 2-20 parts of hippophae rhamnoides leaves, 2-20 parts of roses, 2-20 parts of jasmine flowers, 2-20 parts of chrysanthemums, 2-20 parts of lotus leaves, 3-30 parts of lotus seeds, 3-30 parts of mulberry leaves, 2-20 parts of kudzu vine roots, 2-20 parts of ganoderma lucidum, 3-30 parts of mesona chinensis, 2-20 parts of honeysuckles, 2-20 parts of licorice roots, 2-20 parts of Chinese wolfberry fruits and 2-20 parts of cassia seeds. After the raw materials are subjected to ultrasonic cleaning, the roses, the jasmine flowers, the chrysanthemums, the hippophae rhamnoides leaves and the Chinese wolfberry fruits are directly decocted to obtain liquid A, the stevia rebaudiana leaves, the siraitia grosvenori, the lotus leaves, the lotus seeds, the kudzu vine roots, the ganoderma lucidum, the mesona chinensis, the honeysuckles, the licorice roots and the cassia seeds are graded and smashed and then are decocted to obtain liquid B, and the liquid A and the liquid B are mixed and then are processed to obtain the all-plant beverage. The beverage does not contain the edible sugar, essence and the chemical additives, contains beneficial ingredients, such as stevioside, flavone, vitamins and coarse fiber, is suitable for daily drinking of people and is especially suitable for diabetic patients to drink.