The invention relates to a method for fast extracting loads in a movement mechanism and an optimizing design scheme. The method includes the following steps that firstly, a movement mechanism principle diagram is built up, load conditions of the movement mechanism are determined, and a movement tract diagram is generated; secondly, load information of the movement mechanism is extracted, a movement mechanism driving load curve is automatically drawn, multiple load conditions of the movement mechanism are overlapped, and the maximum load which the movement mechanism can bear is extracted; thirdly, an initial scheme of the movement mechanism is optimally designed, and the design of the movement mechanism can be optimal finally. By means of the scheme, in the initial design period, the inner loads of parts in different conditions and moments can be fast extracted according to coordinate positions of a mechanism part so that strength persons can conduct primary strength check and optimal design on a mechanism system before obtaining a specific Catia entity model of the mechanism part, it is ensured that the design of the mechanism system is the optimal scheme from the beginning, and therefore a design period can be fully shortened and development cost is saved.