The invention discloses a perilla vinegar beverage and a preparation method thereof, which comprises the following components in percentage by weight: 10 to 15 percent of perilla juice, 1 to 2 percent of table vinegar, 2 to 8 percent of honey, 0.06 to 0.1 percent of citric acid, 0.01 to 0.02 percent of essence, 0.01 to 0.04 percent of potassium sorbate, 0.1 to 0.8 percent of common salt, 0.001 to 0.002 percent of ethyl maltol, and the balance of water. The preparation method thereof comprises the following steps of: mixing perilla leaves and the water for pulping to obtain rude juice, adding pectase into the rude juice to perform reaction for 2 to 3 hours by preserving heat, then adding vitamin C and chitin into the rude juice, and cutting the rude juice at a high speed to obtain the perilla juice; and adding the table vinegar, the honey, the citric acid, the essence, the potassium sorbate, the common salt and the ethyl maltol into the water to obtain a mixture, heating to dissolve the mixture, adding the perilla juice into the mixture when the temperature is raised to 70 to 75 DEG C, heating to 90 to 95 DEG C after complementing enough water, filtering by using diatomaceous earth, and finally performing homogenization, degasification, sterilization and cooling on the mixture to obtain the perilla vinegar beverage. The perilla vinegar beverage has the advantages of low sugar, low acid and rich fragrance, excellent flavor, rich nutrients, and health-care function, and wide market development prospect.