Seeding brick can create a good living environment and guide the development and growth of plant roots. Moreover, Seedlings can be transplanted without time limit. Seeding bricks were made of red clay, loess, and white and black soils blended with 0%, 5%, 8% and 10% wheat straw and evaporation experiment was then conducted for the bricks. In terms of the evaporation measured for the same soil, the seeding bricks were in the order of seeding brick with 0% wheat straw > seeding brick with 5% wheat straw > seeding brick with 8% wheat straw > seeding brick with 10% wheat straw. Results showed that the wheat straw content affected the evaporation of the seeding bricks significantly. The more wheat straw content, the smaller evaporation was. Therefore, adding wheat straw could reduce evaporation loss of the seeding bricks. In terms of the evaporation, the seeding bricks blended with wheat straw of the same percentage but different soils were in the order of red clay brick> black hemp soil brick> mountain white clay brick>loessal soil brick. However, the differences between them were little. Comprehensively, the evaporation loss of loessal soil seeding brick with 10% wheat straw was the least.