The influences of different water cement ratios (0.40~0.50)and different replacement rates (0%~30%)of recycled brick grain on the workability and elastic modulus of the recycled concrete are investigated based on the slumps experiment and elastic modulus experiment of those concrete mixtures. The test results indicated that with the increase of content of recycled brick grain, the workability and the elastic modulus become bad under the condition of the same water cement ratio. And when the replacement rate of recycled brick grain is 30% and water cement ratio is 0.50, the descend range is equal to 17.62% for its elastic modulus. Based on the test results, the prediction model of the elastic modulus is proposed for the recycled concrete with brick grain.