This subject imparts in the second cuadrimestre of the second course of the degree in Economy and together with the subject Microeconomía I, imparted in the first cuadrimestre, configures a complete course of microeconomía intermediate. These two subjects develop more formally the contents presented in the subject Principles of Economy I, with the objective of familiarizar the students with the method of the economic analysis, in particular, with the process of "modelización" of the economic problems. The concrete objective is analyze in detail the individual behaviour of the economic agents and the operation of the bought in the that interact, so much in a context of perfect competition (Microeconomía I), how in one context of competition imperfecta (Microeconomía II). The analysis will realize , firstly, since a perspective of partial balance (Microeconomía I), for afterwards board the analysis since a perspective of general balance (Microeconomía II).