An imaging system capable of setting an optimum injection condition in accordance with an imaging condition and preventing erroneous inputs and erroneous operations when determining the injection condition based on the imaging condition. The imaging system includes an injecting apparatus for a chemical liquid and an imaging apparatus, which is connectable to the injecting apparatus. The imaging apparatus includes: a control unit to determine a first imaging condition based on externally acquired object information, and to transmit the first imaging condition to the injecting apparatus； and an input unit to input a second imaging condition changed from the first imaging condition. The injecting apparatus includes a control unit to determine a first injection condition based on the first imaging condition, and to change, when the second imaging condition is received from the imaging apparatus, the first injection condition to a second injection condition based on the second imaging condition.
