The Civil Code has made the relevant systems of community environmental management green, but there is still room for improvement in the tort liability system of the property company’s violating the obligation of environmental management. The property company should assume the tort liability for violating the obligation of environmental management when the damage occurs. The obligation of environmental management of the property company is statutory and belongs to the obligation of security. The property company violates the obligation of environmental management, which provides an opportunity for the third party to commit the tort smoothly and has indirect causative potency for the damage. The omission of the property company and the tort of the third party constitute the concurrence of tort. The third party shall assume the tort liability for the victim’s damage. If the third party cannot assume the tort liability, the property company shall assume the supplementary liability based on its ability of prevention.