The present invention provides one kind of plastic forming apparatus including one hopper for feeding plastic material, one material barrel communicated to the hopper for plasticizing plastic material, and at least one partitioning board inside the hopper to separate the hopper. The plastic forming apparatus may be applied in forming batch plastic products with personalized grains. The present invention provides also the plastic forming process, which includes the following steps: feeding plastic material of at least one color into the hopper, plasticizing the plastic material, pushing the plastic material to the material barrel, and injecting the material barrel into the mold cavity of the plastic forming mold. The present invention can form plastic products of different grains, has simple operation and low cost, and is suitable for batch production.