To provide a method for manufacturing a cement product consisting of a cement material without fear about the deterioration of strength in the first and the second surface of the cement product and also the fall of, for example, an attached product from a building frame.

A first elastic 10 form for making the first surface shape of a product and a second elastic form 12 for making the second surface shape are prepared. Mortar 16 which is a cement material is poured, for example, into each of the elastic forms 10 of urethane rubber and is vibrated using a vibration machine 18. After that, the first and the second elastic form 10, 12 are superposed over each other and the mortars 16 loaded in both elastic forms 10, 12 are combined together. After this combining process, the mortar 16 is placed on a receiving member and left alone and is cured in such a state that the shape of both forms 10, 12 is adapted to the mounting faces of members for receiving both form shapes. After drying the mortar 16, the cement products are released from the forms 10, 12.