A division device includes a platform, a withstanding element and a pressure element. The platform has a platform surface. The withstanding element, located on the platform surface, has at least one shrink-top-type withstanding structure protruding from the platform surface and extending along a withstanding line. The shrink-top-type withstanding structure is to withstand the solar cell sheet. The pressure element, located above the platform, has two forcing portions protruding toward the platform. While the solar cell sheet is under dividing, a back surface of the solar cell sheet opposing to the front surface is arranged to face the shrink-top-type withstanding structure by aligning the trench with the withstanding line, and then the two forcing portions are introduced to apply predetermined depression individually onto the two solar cell units, such that the solar cell sheet are divided into the two separate solar cell units.