An endoscope system, comprising: an endoscope that has a light guide for guiding light; a light source device including a light source unit having two or more light sources configured to supply light to the light guide and that have different main wavelengths, and a table storage unit for storing at least information of the length of the light guide for each type of the endoscope as a table; a light source driving unit configured to supply a driving signal to each of the two or more light sources to emit light; a light source control unit configured to input a light amount setting value to the light source driving unit to make the light source driving unit generate the driving signal corresponding to the light amount setting value; and a light source information storage unit configured to store information of the main wavelength of at least one of the two or more light sources, wherein the endoscope has a scope information storage unit configured to store information of a scope type, and wherein the light source control unit is configured to adjust a light amount ratio in light emitted from the endoscope to a preset light amount ratio by acquiring the information of the main wavelength of the at least one light source from the light source information storage unit, acquiring the information of the scope type from the scope information storage unit of the connected endoscope, acquiring the information of the length of the light guide of the endoscope with reference to the table stored in the table storage unit, setting at least one light amount setting value according to at least the information of the main wavelength and information of a length of the light guide obtained from the information of the scope type, and inputting the light amount setting value to the light source driving unit to control a light emission amount of the at least one light source driven by the light source driving unit. an endoscope that has a light guide for guiding light; a light source device including a light source unit having two or more light sources configured to supply light to the light guide and that have different main wavelengths, and a table storage unit for storing at least information of the length of the light guide for each type of the endoscope as a table; a light source driving unit configured to supply a driving signal to each of the two or more light sources to emit light; a light source control unit configured to input a light amount setting value to the light source driving unit to make the light source driving unit generate the driving signal corresponding to the light amount setting value; and a light source information storage unit configured to store information of the main wavelength of at least one of the two or more light sources, a light source unit having two or more light sources configured to supply light to the light guide and that have different main wavelengths, and a table storage unit for storing at least information of the length of the light guide for each type of the endoscope as a table; a light source driving unit configured to supply a driving signal to each of the two or more light sources to emit light; a light source control unit configured to input a light amount setting value to the light source driving unit to make the light source driving unit generate the driving signal corresponding to the light amount setting value; and a light source information storage unit configured to store information of the main wavelength of at least one of the two or more light sources, wherein the endoscope has a scope information storage unit configured to store information of a scope type, and wherein the light source control unit is configured to adjust a light amount ratio in light emitted from the endoscope to a preset light amount ratio by acquiring the information of the main wavelength of the at least one light source from the light source information storage unit, acquiring the information of the scope type from the scope information storage unit of the connected endoscope, acquiring the information of the length of the light guide of the endoscope with reference to the table stored in the table storage unit, setting at least one light amount setting value according to at least the information of the main wavelength and information of a length of the light guide obtained from the information of the scope type, and inputting the light amount setting value to the light source driving unit acquiring the information of the scope type from the scope information storage unit of the connected endoscope, acquiring the information of the length of the light guide of the endoscope with reference to the table stored in the table storage unit, setting at least one light amount setting value according to at least the information of the main wavelength and information of a length of the light guide obtained from the information of the scope type, and inputting the light amount setting value to the light source driving unit to control a light emission amount of the at least one light source driven by the light source driving unit.