The aimed to study the functional and efficient strains of potassium-solubilising bacteria in the rhizosphere soil of Fritillaria taipaiensis from different origins，and to explore the diversity of good strains and their growth-promoting effects on Fritillaria taipaiensis，so as to lay the foundation for the improvement of yield and quality of Fritillaria taipaiensis plants.The yellow potassium-solubilising circle method was used for the initial screening of potassium-solubilising strains，silicate liquid culture with potassium feldspar as potassium source was used for the quantitative determination of potassium-solubilising capacity of the strains，and the potassium-solubilising capacity was determined using the flame spectrophotometer method，and the indicators of potassium-solubilising capacity were screened to find out 45 dominant bacterial strains；and the indicators of the bacterial biochemical capacity，such as the capacity of phosphorus-solubilising，iron-producing and 3-indoleacetic acid(IAA)-producing，were used to conduct the re-screening of bacterial strains.Three strains of highly efficient potassium-solubilising bacteria were identified by strain morphology，Gram staining observation，physiological and biochemical experiments and 16S rDNA sequencing analysis.Results showed that a total of 103 strains of potassium-solubilising bacteria were isolated from the rhizosphere soil samples of Fritillaria taipaiensis，among which 45 strains were more advantageous in potassium-solubilising ability，and three highly efficient potassium-solubilising bacterial strains，K9-4，K2-4，and K4-1 were obtained by primary and re-screening，which were Bacillus cereus，Burkholderia hospita and Bacillus subtilis，respectively，belonging to two strains of Bacillus and one strain of Burkholderia.The strain with the strongest ability to solubilise potassium and inorganic phosphorus was Bacillus cereus，with a potassium enhancement rate of 60.32%，and the highest conversion of potassium feldspar powder up to 1.26 mg·L-1，and the conversion of tricalcium phosphate up to 8.85 mg·L-1；the strain with the strongest ability to produce IAA and solubilise organic phosphorus was Bacillus subtilis，with a highest conversion of lecithin up to 2.78 mg·L-1，and the iron production index was as high as 2.42；while the above functions of Burkholderia cepacia strain were between the remaining two strains.In this study， three strains of high-efficiency potassium-solubilising bacteria with strong potassium-solubilising and life-promoting abilities were successfully screened.These strains could provide strain resources for the development of microbial potassium-solubilising bacterial fertilizers， as well as more options for the selection of pro-biotic fertilizers for Fritillaria taipaiensis plants.