A fluorescence observation apparatus (1) according to the present invention includes a light source (3) that irradiates an object (X) with white light and excitation light a fluorescence-image generating unit (62) and a white-light-image generating unit (61) that generate a fluorescence image G2 and a color white-light image (G1) of the object (X), respectively a condition setting unit (63) that sets weights individually for multiple color component images constituting the white-light image (G1) and a combining unit (64) that combines at least one color component image to which the fluorescence image (G2) has been added and the other color component images while applying the weights that have been set by the condition setting unit (63), and the condition setting unit (63) sets the weights based on the color component images of the white-light image such that the weight for the color component image to which the fluorescence image (G2) is added is greater than the weights for the other color component images.
