Action in rem is a special kind of action in personam by its nature. Its real target is not the property but the owner. Action in rem is inevitable in the international marine transport. Its appearance shows the objective inevitability. There are some similarities between action in rem and Chinese maritime pre-litigation security proceedings,but the difference between the two systems is also distinct and they shouldn’t be lumped together Its real target is not the property but the owner. Action in rem is inevitable in the international marine transport. Its appearance shows the objective inevitability. There are some similarities between action in rem and Chinese maritime pre-litigation security proceedings, but the difference between the two systems is also distinct and they should not be lumped together