The invention belongs to a 
building material and the field of preparation thereof, in particular to a decorative 
brick and a preparation method thereof. The decorative 
brick consists of two or three 
layers. A 
surface layer is a concave-convex stereoscopic pattern layer which is prepared from 
cement, fine stone 
powder, reinforced materials and water, or the 
cement, the fine stone 
powder, 
mica, the reinforced materials and the water as main raw materials, and is hydraulically formed through a mould. A bottom layer is a compound layer which is prepared from 
river sand, the 
cement, stones and water, or the cement, the fine stone 
powder, the reinforced materials and the water as the main raw materials, and is hydraulically formed through the mould. The preparation method comprises the following steps of: taking the raw materials of the bottom layer in proportion, fully mixing the materials, and pouring the mixture onto the bottom layer of the mould; then taking the raw materials of the 
surface layer in proportion, fully mixing the materials, and pouring the mixture onto the upper layer of the mould; delivering the filled mould onto a hydraulic 
machine with a stereoscopic pattern top die, and carrying out surface stereoscopic 
embossing and instant forming and demoulding; and then solidifying the materials at a normal temperature or by heating to obtain a product of which one lateral surface is provided with a stereoscopic pattern. The decorative 
brick and the method have the advantages of simple process, convenient operation, low cost, beautiful product appearance and rich stereoscopic 
sensation.