A preparation method of a Rosa damascena suspended beverage is characterized by comprising the following steps of: using fresh Rosa damascena as a raw material to prepare a rose petal jam as a raw material for later use, heating and filtering to obtain a filtrate, adding raw materials such as rose syrup, honey and white sugar into the filtrate with mixing, carrying out homogenization and degasification on a mixed liquor, filling and sealing, and sterilizing to obtain the Rosa damascena suspended beverage. In comparison with present flower beverages, the Rosa damascena suspended beverage has the following advantages of: 1) Rosa damascena is adopted to prepare the rose petal jam for later use, thus guaranteeing sufficient supply of raw materials for the beverage; 2) Rosa damascena has rich fragrance and the product has a unique local flavor; 3) the suspended beverage fully maintains nutritional components of roses and has a certain health-care effect for human body; 4) no antiseptic is used during the processing process; 5) the preparation method provided by the invention is simple, the raw materials are abundant and easily available, the rose syrup used is a by-product of the rose essential oil production, and the cost is low.