A securing system for a freight wagon and a freight wagon are provided. The securing system includes an entrance area floor and non-entrance area floor in the freight wagon, multiple first rolling mechanisms and multiple turn position-limiting mechanisms are provided on the entrance area floor, multiple second rolling mechanisms, multiple turn position-limiting mechanisms, multiple lateral position-limiting mechanisms and multiple end position-limiting mechanisms are provided on the non-entrance area floor. With the technical solutions of the present application, loading, conveying and securing of cargo can be achieved in the shortest time on the basis of ensuring the safety and reliability of the transportation, and compared with the conventional cargo loading, the transport efficiency of the cargo is significantly increased and the cost is reduced efficiently.