An exhaust gas control system for an internal combustion engine, the exhaust gas control system comprising: a filter arranged in an exhaust passage of the internal combustion engine, the filter being configured to collect particulate matter that is emitted from the internal combustion engine; a differential pressure sensor configured to detect an upstream-downstream differential pressure that is a difference between an exhaust pressure upstream of the filter and an exhaust pressure downstream of the filter; and an electronic control unit configured to i) acquire a particulate matter accumulation amount that is an amount of particulate matter collected in the filter, ii) execute a filter regeneration process, the filter regeneration process being a process of oxidizing and removing particulate matter collected in the filter by raising a temperature of the filter to a first target temperature, and iii) execute a pre-regeneration process for a predetermined period and execute the filter regeneration process after completion of the pre-regeneration process, the pre-regeneration process being a process of, when the particulate matter accumulation amount becomes larger than or equal to a predetermined threshold, raising the temperature of the filter to a second target temperature lower than the first target temperature and increasing the concentration of nitrogen dioxide contained in exhaust gas flowing into the filter, characterized in that the electronic control unit is further configured to: iv) set the first target temperature and execute the filter regeneration process such that the first target temperature in the case where a speed of change in a detected value of the differential pressure sensor during execution of the pre-regeneration process is high is lower than the first target temperature in the case where the speed of change is low. a filter arranged in an exhaust passage of the internal combustion engine, the filter being configured to collect particulate matter that is emitted from the internal combustion engine; a differential pressure sensor configured to detect an upstream-downstream differential pressure that is a difference between an exhaust pressure upstream of the filter and an exhaust pressure downstream of the filter; and an electronic control unit configured to i) acquire a particulate matter accumulation amount that is an amount of particulate matter collected in the filter, ii) execute a filter regeneration process, the filter regeneration process being a process of oxidizing and removing particulate matter collected in the filter by raising a temperature of the filter to a first target temperature, and iii) execute a pre-regeneration process for a predetermined period and execute the filter regeneration process after completion of the pre-regeneration process, the pre-regeneration process being a process of, when the particulate matter accumulation amount becomes larger than or equal to a predetermined threshold, raising the temperature of the filter to a second target temperature lower than the first target temperature and increasing the concentration of nitrogen dioxide contained in exhaust gas flowing into the filter, characterized in that the electronic control unit is further configured to: iv) set the first target temperature and execute the filter regeneration process such that the first target temperature in the case where a speed of change in a detected value of the differential pressure sensor during execution of the pre-regeneration process is high is lower than the first target temperature in the case where the speed of change is low. i) acquire a particulate matter accumulation amount that is an amount of particulate matter collected in the filter, ii) execute a filter regeneration process, the filter regeneration process being a process of oxidizing and removing particulate matter collected in the filter by raising a temperature of the filter to a first target temperature, and iii) execute a pre-regeneration process for a predetermined period and execute the filter regeneration process after completion of the pre-regeneration process, the pre-regeneration process being a process of, when the particulate matter accumulation amount becomes larger than or equal to a predetermined threshold, raising the temperature of the filter to a second target temperature lower than the first target temperature and increasing the concentration of nitrogen dioxide contained in exhaust gas flowing into the filter, characterized in that the electronic control unit is further configured to: iv) set the first target temperature and execute the filter regeneration process such that the first target temperature in the case where a speed of change in a detected value of the differential pressure sensor during execution of the pre-regeneration process is high is lower than the first target temperature in the case where the speed of change is low.