This study aims to describe the characteristics of proportional reasoning of class VIII students of SMP Negeri Model Terpadu Madani Palu based on high-ability gender. This type of research is a case study using a qualitative approach. The research subjects were selected based on purposive sampling, while the main characteristics that became important in choosing the subject were "high-ability students". Two students were selected, namely male students (M) and female students (F) who had high abilities. This research resulted in three categories and one sub-category. The categories and sub-categories include: (1) Qualitative with one sub-category, namely: (a) making a comparison (2) Additives, (3) Multiplicative. Based on these categories and sub-categories, it is concluded that the Subject of M in solving problem the ratio has the characteristics of proportional reasoning in the qualitative and multiplicative categories. Meanwhile, the subject of F in in solving problem the ratio has the characteristics of proportional reasoning in the additive and multiplicative categories