It's easy to tell the difference.

Mainly look at the abdomen male crabs abdomen is triangular pointed shape while female crabs abdomen is round or oval.

1, look at the abdomen, look at the legs,

Male crabs have a triangular-shaped abdomen, while female crabs have a round or oval abdomen. This is the easiest and most convenient way to distinguish between male and female crabs, and people can tell the difference with their eyes. Female crabs only have fine hair on the front two legs, while male crabs are different, they have dense hair on all eight legs.

2, look at the crab yolk

Crab has a reddish-orange grain hard is the crab yolk, there is crab yolk is female crabs, crab yolk is the crab's ovaries and egg cells. Generally around the ninth month of the lunar calendar, the female crab gonads mature, the crab meat is the most plump. Male crabs do not.