Network meta analysis (NMA) has received more and more attention in the field of evidence based medicine. NMA can quantitatively or qualitative reflect the emerging effect and compare the results through consistency, inconsistency assessment, relationship diagram forest plot and the correction funnel plot. This article introduced the installation of network module for the two categories of data in the STATA step by step: the installation of metan module, the installation of network module, other installation on methods of network module. The article used example to demonstrate how the NMA results are generated and how they are interpreted. Finally the implementation of other NMA results is also described.