PURPOSE: to analyze the reasons related to non-compliance of patients with speech therapy in a Health Center Primary Care in Campinas. METHOD: an ex-post facto exploratory study with qualitative characteristics, developed with patients or people responsible for them, seen at a health service and who did not comply with speech therapy. Semi-structured interviews were conducted, with semi-directed questions, so as to catch the reasons and attitudes exposed by patients or people responsible for them, regarding the non-compliance with the Speech, Language and Hearing Therapy. The interviews were transcribed and systematized considering the assumptions of Thematic Analysis, a technique of Analysis of the Content. RESULTS: ten people were interviewed. During the analysis, a variety of themes and subthemes raised, from the ones related to the reason for the abandonment up to the assessment of speech therapy service in the view of users, plus the familiar organization dynamics to attend the visits. This study indicated that there are different reasons for quitting speech therapy in the context of Primary Care, such as: incompatibility of time, the dynamics of the visits, observation of improvement/solution of the case, patient's lack of interest and the need to have a previous treatment in another area. CONCLUSION: it was possible to observe the presence of different reasons related to an abandonment in the same interview, aspect that corroborates with the one discussed by the national and international literature, which characterizes the process of compliance/non-compliance as complex and multifactorial.