1, the production process is different: crab roe is crab eggs, which are extracted from crab yolk, while crab yolk is the combination of ovaries and digestive glands of female crabs.

2, the composition is different: crab roe is crab eggs produced when the crab hatched small crabs, crab yolk is the combination of ovaries and digestive glands in the crab, the composition is more complex, in addition to the undischarged egg cells, as well as other crab organs, glands, tissues and other substances.