To study the location and sizing of distributed generation on the distribution network, Comprehensively considering three indices of active power loss, the static line voltage stability and thermal, this paper establish a multi-objective linear programming model based on analytic hierarchy process (AHP). A new intelligent optimization algorithm, Beetle Antennae Search-BAS, is improved to solve the problem of location and sizing of distributed generation. The feasibility and effectiveness of the Improved Antennae Search-IBAS in the solution of distributed generation’s location and sizing problems are verified by IEEE-33-nodel system simulation.