BackgroundWith the aging population, the increasing prevalence of chronic non-communicable diseases, and the diversified needs for primary health care (PHC) medicines, it is necessary to rethink the functional role of the supply of PHC medicines. This study aims to evaluate the supply of PHC medicines and the status of meeting PHC medicine needs.MethodsThe mixed-methods study was conducted to evaluate the supply of PHC medicines in Shandong Province. In the quantitative study, survey questionnaires were distributed to county hospitals, township hospitals, and patients, and a prescription review was performed in township hospitals. In the qualitative study, semi-structured interviews were conducted with the pharmacy managers, physicians, and patients in county hospitals, township hospitals, and village clinics. A senior pharmacist from a tertiary hospital who has rich experience on the indications for medicine use, accompanied us on a visit to inspect the PHC pharmacies to survey medicine equipment with a professional perspective.ResultsQuantitative analysis revealed that 211 county hospitals and 1,581 township hospitals participated in the survey, revealing the median annual frequency of medicine shortages of 5.0 times for county hospitals and 2.0 times for township hospitals. Of the 6,323 patient medication surveys, after excluding 152 patients not involved in medication use, 945 (15.3%) indicated medicine shortages, with half of these attributable to institutions lacking required medicines (52.8%). On average, the prescription qualified rate of 37 township hospitals was 72.2%. Four final themes emerged during the qualitative data analysis: (1) Supply of PHC medicines; (2) Solutions to the shortage of off-list medicines; (3) Appropriateness of PHC medicines list; (4) Pharmacist workforce development and pharmacy services.ConclusionsThe discrepancy between patients’ need for PHC medicine and present medicine supply is noteworthy. It is suggested that governments should optimize the existing lists to adequately meet patient medicine needs and prioritize medicines for chronic diseases, which is also particularly important for developing countries. Integrated health care may be a novel strategy to establish unified medicines list and achieve uniform pharmaceutical services in PHC.