A dynamic analysis system includes: an analytic value calculation unit configured to calculate an analytic value in a plurality of time phases on the basis of a dynamic image in the plurality of time phases obtained by performing dynamic photography on the chest of a subject; a ventilation state calculation unit configured to calculate, using a non-linear function, an index value representing a ventilation state of a lung field from the analytic value in the plurality of time phases; a display unit; and a control unit configured to display the index value calculated on the plurality of time phases, on the display unit.