Based on the complex network theory, a local-world evolving weighted wealth network model is constructed, which considers local connection, cost and income distribution. By applying the rate equations, the kinetic equations of degree and wealth are obtained. Then, through the analysis of cluster coefficient, degree correlation, wealth distribution and wealth entropy, it is found that the wealth model is a negative network. The network displays wealth imbalance, and the wealth heterogeneity possesses a positive association with the structure parameter r as well as a negative association with M. Finally, an example is given to illustrate and validate the proposed conclusion.