The invention discloses a grid investment benefit evaluation method based on multiple indexes and multiple levels. The grid investment benefit evaluation method is technically characterized by comprising the following steps of: constructing a grid investment benefit 
evaluation system comprising a main grid frame, a distribution network sub unit, a dividing 
specialty and a component 
voltage level investment benefit index; carrying out simplified 
processing on the index in the grid investment benefit 
evaluation system; carrying out unitization 
processing on the index in the grid investment benefit 
evaluation system; carrying out index weight calculation on the index in the grid investment benefit evaluation 
system; and evaluating the investment benefit of each examination object by using a linear comprehensive marking method. According to the method, the grid investment benefit evaluation 
system is constructed from four levels such as the main grid frame, the distribution network sub unit, the dividing 
specialty and the component 
voltage level investment benefit index; the accuracy of the 
investment evaluation is improved; the comparing and the finding of the problems existing in the grid investment are facilitated; and the grid investment benefit evaluation method can not only be used for 
post evaluation of the grid investment benefit or used for providing an important decision reference for the grid construction investment direction for the coming year.