Rules need to know when eat the crabs
　　Crab contains abundant protein (higher than pork , fish for several times ), the protein will be resolved rapidly behind death, bacteria breed in a large amount, extremely easy to become bad, so don't eat the died crabs , don't eat the crab that has not undergone to boil completely, either . While eating crabs , can make seasoning with the ginger vinegar which can help digest , also cam help disinfect . You can put some purple perilla leaves at the steamed crab. Purple perilla is peppery and warm, sweat form of solving, in being competent and wide that can wipe off the toxin in fish and crab .

    一、Should not eat with the loach together :
　　State according to " Compendium of Materia Medica ", "loach sweet and flat and nonpoisonous, can warm and benefit the body, can quench one's thirst, can cure the male genitals that not arise ". It is obvious that its nature is tender warmly. But crab is cold, the function is contrary to the loach, so the two should not be with eating at the same time.
　　二、Should not eat with the musk melon together :
　　Musk melon muskmelon, sweet and cold in flavor and slippery, can eliminate hot to have an ease constipation. If it is eaten with crab , it can impair stomach to send to suffering from diarrhoea. The one that needs to be pointed out is that the pregnant woman with habitual abortion should avoid eating crabs. Because crab is a compatibility composition of medicine to hasten parturition down foetus, it is used in auxiliary to treat extravasted blood of producing, the afterbirth is not put the disease , etc., unfavorable to preventing miscarriage

　　三、Can't eat with the persimmon together:
The ancient medical book records : "If eat crab with persimmons together, it can make people suffer from diarrhoea . "The reason is that the crab includes the abundant protein, and persimmons includes a lot of tannic acid, the two eat together, will solidify and harden. In addition, the crab and persimmon all belong to the cold and cool things , at the same time can easily cause to uncomfortable if take it excessively . "when suffer crab’s toxin occasionally , fry purple perilla juice to drink or smash wax juice to drink, that can all dismiss . "
　　四、Mix with ginger , wine and cold can be get rid of:
　　Condiment slightly when eating crab , but must add fresh powder of ginger among condiment, it can distribute the cold that detoxifies in having warm; when having crab, some people like to drink some wine, in fact they would like to borrow the warm in wine to solve the cold in crab; If feels the stomach is uncomfortable after eating crabs, can boil water by several gingers , while the hot drink is laid, there is warm stomach efficiency .