To improve the theftproof performance of vehicle lock(i.e. Thetechnology erm:secret grade, opeaning rate), we invented a newkind of key and lock with high secret grade and sensitive operation ,and gained the patent with the number: zl 96 10319.2 under the authorization of state intellectual property office a kind of processing means on key gear,this product is available to match by the key number, and to be re-made when a loss happens, thus solves the bad theftproof performance of vehicle lock at domestic market.