Soil is one of the most important resources for humans, their use continued in crops with exotic species such as Pinnus sp. and Eucaliptus sp. It generates negative effects such as soil erosion and loss of biodiversity in an ecosystem. Thus in the Research Group on Ecology and Plant Conservation Colombia (GIECPC) at Distrital University, he has focused on the study of soil restoration by microorganisms, which are involved in the production of nutrients in the soil . Within the study Effective Microorganisms (E.M.), which is a technology developed by professor Terou Higa at Ryukyus University, Okinawa, Japan (Higa, 1991), for soil improvement was used. For this study the effects of inoculation was analyzed E.M. directly or in composted soils anthropically affected in the Neusa, Colombia Cundinamarca Laureles area. With a total of 16 treatments, microorganisms identified by bacterial cultures. Also, the study of physico-chemical it was analisided ion nitrogen, carbon, phosphorus, magnesium analyzed, among others. These results showed a significant growth in both the UFC, finding weihenstephanensis organisms such as Bacillus, Lactobacillus pentosus, among others; and increasing soil nutrients at the end of the process, shown in the amount of phosphorus that increase 8 (col (+) / kg) to 116 (col (+) / kg). Noting that treatments with compost had an increase in nutrients and UFC unlike the treatments were inoculated directly into the ground, it was obtained as better treatment 10 which was corroborated by analysis of variance. It is concluded that the technology E.M. has a positive effect on restoring phisical and chemically improve the soil and an increase of microorganisms also affirmed that the effect of E.M. It is more effective with inoculating compost direct inoculation into the ground. Following treatment 10 (Cerdaza, potatoes, sawdust 25% of E.M.) showed the best results.