In this paper I will present the current state of the distribution of biodiversity in Mexico. The amazing biodiversity of Mexico is due to its biogeographical position, much of its territory Nearctic and Neotropical biogeographic regions are overlap. In addition, other factors that increase its biodiversity are its intricate relief, climate variability and its complex geological history and different types of characteristic vegetation. Although the Mexican territory is only 1.4% of the surface of the Earth, it contains between 10% and 12% of all species on the planet, being the third mega-diverse country of terrestrial vertebrates, with 535 species of mammals (30% endemic); 1,050 bird species (9-25% endemic); 1,100 species of reptiles and amphibians together (50% and 64% endemic, respectively) and 2,695 species of fish (10% endemic). Currently, the conservation of biodiversity is a race against time, because conservation problems will be exacerbated by population growth and the multiple pressures it exerts on natural environments for the expansion of urban sprawl and increasing demand for resources.