To provide a multistage type refrigerating and cold storage open display case which makes it possible to easily set the illuminance balance of the indoor entirety in a preferable state even if the distance from an illumination lamp to a commodity surface is extended by reducing the number of intermediate shelves.

In the multistage refrigerating and cold storage open display case having a plurality of stages of display shelves 2, 3, 4, the shelf 2 of the uppermost stage of the shelves is illuminated by a canopy illumination lamp 7a and a ceiling illumination lamp 6a and the residual intermediate stage of the shelf and lowermost stage of the display part are illuminated by shelf illumination lamps 2a, 3a, 4a installed on the lower surfaces of the ends of the respective shelves, the output of the ballast of both or ether one of the lamps 7a and 6a is set to the higher output than a reference output.