A therapeutic treatment system having four output modes, the output modes being a first output mode for outputting a first high-frequency current energy, a second output mode for outputting a second high-frequency current energy, a third output mode for outputting a first thermal energy, and a fourth output mode for outputting a second thermal energy, the therapeutic treatment system comprising: a pair of holding members (13a, 13b) configured to hold a biological tissue, which is a treatment target, such that at least one of the holding members (13a, 13b) moves to open and close relatively to another; a pair of first electrodes (23a, 23b) provided in the holding members (13a, 13b) and capable of outputting said first high-frequency current energy for sealing the biological tissue by setting the biological tissue to a first sealing temperature between 60°C and 100°C; a linear second electrode provided in one of the holding members (13a, 13b) capable of outputting, between the linear second electrode and one of the pair of first electrodes (23a, 23b), said second high-frequency current energy for dissecting the biological tissue at a first dissection temperature between 200°C and 400°C higher than the first sealing temperature; a pair of first heaters (24a, 24b) provided in the holding members (13a, 13b) and capable of outputting said first thermal energy for sealing the biological tissue by setting the biological tissue to a second sealing temperature which is between a temperature higher than the first sealing temperature and 200°C; a second heater provided in one of the holding members (13a, 13b) capable of outputting said second thermal energy for dissecting the biological tissue at a second dissection temperature between 250°C and 300°C lower than the first dissection temperature and higher than the second sealing temperature; and a control section configured to perform output of the first high-frequency current energy according to the first output mode, perform output of the second high-frequency current energy according to the second output mode, perform output of the first thermal energy according to the third output mode, and perform output of the second thermal energy according to the fourth output mode, the control section being further configured to control respective temperatures of the pair of first electrodes (23a, 23b) and the second heater to output the second thermal energy by the second heater after the output of the first high-frequency current energy by the pair of first electrodes (23a, 23b). a pair of holding members (13a, 13b) configured to hold a biological tissue, which is a treatment target, such that at least one of the holding members (13a, 13b) moves to open and close relatively to another; a pair of first electrodes (23a, 23b) provided in the holding members (13a, 13b) and capable of outputting said first high-frequency current energy for sealing the biological tissue by setting the biological tissue to a first sealing temperature between 60°C and 100°C; a linear second electrode provided in one of the holding members (13a, 13b) capable of outputting, between the linear second electrode and one of the pair of first electrodes (23a, 23b), said second high-frequency current energy for dissecting the biological tissue at a first dissection temperature between 200°C and 400°C higher than the first sealing temperature; a pair of first heaters (24a, 24b) provided in the holding members (13a, 13b) and capable of outputting said first thermal energy for sealing the biological tissue by setting the biological tissue to a second sealing temperature which is between a temperature higher than the first sealing temperature and 200°C; a second heater provided in one of the holding members (13a, 13b) capable of outputting said second thermal energy for dissecting the biological tissue at a second dissection temperature between 250°C and 300°C lower than the first dissection temperature and higher than the second sealing temperature; and a control section configured to perform output of the first high-frequency current energy according to the first output mode, perform output of the second high-frequency current energy according to the second output mode, perform output of the first thermal energy according to the third output mode, and perform output of the second thermal energy according to the fourth output mode, the control section being further configured to control respective temperatures of the pair of first electrodes (23a, 23b) and the second heater to output the second thermal energy by the second heater after the output of the first high-frequency current energy by the pair of first electrodes (23a, 23b).