The invention discloses a simple cylindrical foundation platform capable of being installed separately. The simple cylindrical foundation platform comprises three or four cylindrical foundations. The cylindrical foundations are detachably matched with jacket legs in the axial direction, and the jacket legs are connected to form a jacket. An upper-portion module is arranged on the top of the jacket. According to the simple cylindrical foundation platform, the cylindrical foundations and the jacket capable of being installed separately can be separately built. In the installation process, the cylindrical foundations at the lower portion are installed firstly, then the jacket is installed in a hoisting mode, the jacket legs are inserted into guide vertical columns through horn mouth structures, and finally, grout is poured in the bracket legs to fix the bracket legs. According to the simple cylindrical foundation platform capable of being installed separately, the cylindrical foundations at the lower portion and the jacket can be installed separately, and therefore use of large floating crane resources is avoided, engineering operation is relatively simple and convenient, the engineering investment is lowered, and the economic benefit is increased.