Exploring the effects of different ancillary methods on the extraction rate of total polyphenols from Fruit of Rosa davurica Pall(FRDP). The optimum conditions for extracting the total polyphenols from FRDP were obtained by single factor and orthogonal experiments: the ratio of material to liquid 1:50 (g:mL), the extraction solvent was 50% ethanol solution, the extraction temperature was 80 °C. After extraction for 1.5 h, the total polyphenol extraction rate was 11.28 mg/g. Then the effects of ionic liquid assisted, ionic liquid synergistic ultrasonic assisted, ionic liquid synergistic ultrasonic-microwave assisted extraction on the extraction rate of total polyphenols from FRDP were investigated. The results showed that the extraction rate of total polyphenols from the ionic liquid was improved by 14.98% compared with the traditional solvent method. The ionic liquid was assisted by ultrasonic-assisted extraction. The extraction rate of total polyphenols in FRDP was increased by 16.13%. The extraction rate of total polyphenols in FRDP was increased by 20.66% by ionic liquid combined with ultrasonic-microwave assisted extraction. The above results indicated that ionic liquid assisted, ionic liquid synergistic ultrasonic assisted, ionic liquid synergistic ultrasonic-microwave assisted can increase the extraction rate of total polyphenols from FRDP, and provide a test reference for the subsequent development and utilization of total polyphenols.