1, edible part difference: the edible part of the sword bean is mainly immature pods, which contain tender beans. Pods need to be peeled off and only eat tender beans inside. The edible part of kidney bean is immature pod, and the beans in the pod are not mature, so the whole pod can be eaten.

2. Differences in nutritional components: The sword bean is rich in protein, dietary fiber, vitamin C, vitamin A, potassium and other nutritional components. The pods are thin and tender, the beans are small and the taste is tender and smooth. Kidney beans are also rich in protein, dietary fiber, vitamin C, vitamin A, potassium and other nutrients. The pods are thicker, the beans are bigger, and the taste is slightly tough.