To judge whether the act of tort system is perfect and reasonable depends in the large scale on whether its principle of responsibility imputation system has been founded.

The paper analyzes the composition and proof of civil liability of environmental torts, then expounds the shortcomings of the imputation system of environmental torts, it also gives some suggestions.

The author also holds that the principles of imputation of product liability in China is a system which includes negligence liability, warranty liability and strict liability.