The problem to investigate is the permanent disequilibrium of Mexican commercial balance of cattle heads and meat regarding United States during the period 1993-2007. The objective is shows that the inequality productive structure on cattle heads and meat that exists between Mexico and American Union, through commercial exchange of those products impact the commercial balance. The methodology used was the consult of international trade and productive aspects of cattle to both countries and the use of structuralism economic theory for the information analysis. The results obtained shows that the inequality structure between both nations (United States as centre and Mexico as periphery) on items such as herd size; integration to meat industry; meat production; carcass weight and that the most important part of the mexican exports are raw materials with few add worth, though commercial exchange impacts on permanent external disequilibrium for mexican commercial balance of cattle heads and meat.