This study aims to identify the difficulties experienced by the professionals responsible for planning the acquisition of medical and hospital materials. As a research strategy, we used the single case study method from the José Alencar Gomes da Silva National Cancer Institute (INCA) as a research unit, in a qualitative approach of an exploratory and descriptive nature, using the survey as evidence sources. documentary, observation and semi-structured interview with professionals of the institution. The investigating area was responsible for 39.69% of the use of the institution's budget (R $ 166.9 million) in 2019 for the acquisition of medical and hospital materials, with the figure of the purchasing planner as a fundamental actor in the stages of this acquisition. With that, a summary table of the problems reported by the purchasing planners in conducting their activities was presented, correlating them with the proposed solutions, which stand out: improving the deadlines of administrative processes; combat the lack of qualified labor; and improve the efficiency of logistical data information system.