The article compares product liability laws in the US and China. The US has three types of liability: negligence, guarantee, and strict. China uses strict liability for consumer responsibility. There are differences in how liability is determined between the two countries. The laws are always changing to balance efficiency and fairness. The differences are influenced by political, economic, and philosophical factors. The discrepancies are due to competing interests. The article suggests ways to balance the laws based on dialectical materialism.