A medical control device includes: an imaging controller configured to control an imaging device to cause the imaging device to capture normal light emitted from a light source and received by way of an observation target in a first period to generate a first captured image, and to capture excitation light emitted from the light source and received by way of the observation target and fluorescence light from the observation target excited by the excitation light in a second period to generate a second captured image； and image processing circuitry configured to: perform an adjustment process to reduce a component of a color corresponding to the excitation light included in the second captured image； and generate a superimposed image by superimposing the first captured image and the second captured image subjected to the adjustment process.
