PROBLEM TO BE SOLVED: To provide a medical tool set excellent in the operability when a first connector is connected to a second connector, and when the connected state is released.SOLUTION: A medical tool set 100 includes a first tool 1 and a second tool 2. The first tool 1 includes: a pair of first clamping pieces 3a and 3b first holding parts 4a and 4b provided in the first clamping pieces 3a and 3b respectively for holding a first connector 10 and a lock means 5 for retaining the state of holding the first connector 10. The second tool 2 includes: a pair of second clamping pieces 8a and 8b and second holding parts 9a and 9b provided in the second clamping pieces 8a and 8b respectively for holding a second connector 20.