How to in sp irit the emp loyees to share the individual know ledge (o r p rivate info rm at ion) is the co re p rob lem of know ledge m anagem en t in en terp rises. A cco rding to an one2w ay know ledge2 sharing model, th is art icle concludes that m arket scale con st rain s the perfo rm ance of know ledge2 sharing schem e in en terp rises. Know ledge advan tage of nat ion s is the ref lect ion of the en terp rise know ledge advan tage, w h ich bases on the en terp rise info rm at izat ion and know ledge2sharing schem e, in the scope of the nat ion. Eff iciency and capab ility of resou rce dist ribu t ion, co st, and the op t ion s of m arket ru les and rou te are th ree f ields that know ledge advan tage of nat ion s m ain ly em bodies in. O bviou sly, the developed coun t ries ho ld nat ional know ledge advan tage. U nder such compet it ive condit ion s, the governm en t s of the develop ing coun t ries have to in tervene en terp rises’ m arket op t ion p roperly, select ively and effect ively. A t least, th is shou ld be done in choo sing the develop ing rou te of info rm at ion indu st ry.