King crab's gills (or lungs) can't be eaten, because they are not delicious, and there are harmful ingredients to human body, and other parts are edible, which is no different from ordinary crabs.

King crab feet are rich in protein, trace elements and other nutrients, which have a good nourishing effect on the body. Eating crabs is beneficial to the rehabilitation of tuberculosis. Traditional Chinese medicine believes that it has the effects of clearing away heat and toxic materials, nourishing bones and marrow, nourishing tendons and promoting blood circulation, dredging meridians and collaterals, benefiting limbs and joints, nourishing liver yin and filling gastric juice. It has a certain therapeutic effect on diseases such as congestion, injury, jaundice, soreness of waist and legs and rheumatoid arthritis.