This spreader is a automatic master beam rotating spreader; which has many advantages such as light self-weight, cheaper price, simple structure, easy maintenance, etc. The spreader is utilized for operation with ISO standard 20', 40' and 45' containers (existing lifting point in 40'). The connection between spreader and lifting mechanism is 4 sheavers at the top of spreader. In addition, the spreader can be separated into 20' and 40' spreader. 20' spreader and rotating mechanism can be connected as a whole system. Moreover, the 40' spreader can be used as required. The mechanics includes twistlock and manual assembly hook, which locate at 20' spreader, and which used in connecting the 20' spreader and 40' spreader together. New master beam spreader is suitable for working in container yard with less speed requirements and portal crane.