This research is a qualitative research with descriptive approach that aims to describe the characteristics of problem solving mathematics in terms of student cognitive style. The subjects of the study were students of class XI MIPA SMAN 8 Makassar consisting of 2 students with FI cognitive style and 2 students with cognitive style FD. instruments in this study are GEFT test, problem-solving test and interview guidance. Data collection is done through data analysis of written test of problem solving and interview.The results showed that: (1) at the stage of understanding the problem, the subject of the FI did not write down the known and the thing asked, while the subject of the FD wrote down the known and the question asked; (2) at the stage of making a problem-solving plan, the subject of the FI writes the formula or constructs an equation to be used in progress, while the subject of the FD compiles more than one problem-solving plan or solves the problem in various ways. In addition, the subject of FD tends to directly create an interface; (3) at the stage of carrying out the split plan, the subject of the FI includes data on the formula chosen in the planning stage or using the substitution-elimination method and completes it by algebraic operations (sum, subtraction, multiplication and division) to obtain a settlement of the problem, whereas the subject of FD includes data or values that are not derived from the problem into the formula chosen in the planning stage; (4) at the re-examining stage, the FI subject does not review the answer before collecting the answer sheets, while the FD subject re-examines the answer before collecting the answer sheets.
                        
                        
                        
                        
                            
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