The utility model discloses a building decoration element, which is made of cement material or gypsum material with addition of foaming agents to form a plurality of micro-pores. The element can be a hollow cement brick, which has one or a plurality of pores. Due to the formation of the plurality of micro-pores , the element has less material consumption, lower cost and lighter weight than a prior element of the same size; in addition, the micro-pores in the element has better thermal insulation effect.