The invention discloses a kitchen range bottom shell. The kitchen range bottom shell comprises a plurality of secondary bottom shells; the joints of the secondary bottom shells are each provided witha connecting component for regulating the size of the kitchen range bottom shell; and the secondary bottom shells are detachably spliced by virtue of the connecting components to form the kitchen range bottom shell. The invention further discloses a modularized kitchen range; the modularized kitchen range is characterized by comprising a combustor, a gas control module, an electronic appliance module and the kitchen range bottom shell; the combustor, the gas control module and the electronic appliance module are correspondingly installed on the corresponding secondary bottom shells of the kitchen range bottom shell; the gas control module is connected with the combustor in order to control the size of the combusting flame of the combustor; and the electronic appliance module is used for igniting gas and is correspondingly connected with a combustion controller and the combustor. The kitchen range bottom shell is formed by splicing a plurality of secondary bottom shells and is adjustable in size according to actual needs so as to meet the installation requirements of the kitchen ranges which are different in size.