Raw earth brick and preparation method

The invention relates to a preparation method of a raw earth brick. The method is characterized by comprising the following steps: raw materials are weighed according to the raw material weight percentages of the raw earth brick, and are well mixed; water accounting for 10-20% of the weight of the raw material is added, and the mixture is well mixed; the well mixed material is added into a mold and is press-molded; the press-molded raw earth bricks are demolded, and are cured for 10-30 days in an environment with air humidity of 10-20% and a temperature of 15-20 DEG C, such that raw earth bricks are obtained.