Abstract: Using the clubroot-resistant Chinese Cabbage CCR001, the disease-susceptible Baby Cabbage CM002, and their F₁, F₂ and BC₁ off springs, inheritance of the disease-resistance in thevegetables was studied.It appeared that the inheritance followed the Mendelian theorem, as the clubroot-resistance in the cabbages was controlled by a single dominant gene. The molecular markers-assisted selection with a soil bacterial inoculation confirmed that the disease-resistance indeedpassed on from the parents, and was inherited in F₁ and F₂. The result also indicated a feasibility of using the method in breeding cabbages with the resistance to clubroot infection.