Abstract: This paper diagnoses the coordination between new energy and regional power grid development, and gives specific suggestions. Firstly, the coordinated development status of new energy and regional power grid is analyzed; Secondly, it introduces the diagnostic indexes of new energy and regional power grid in two aspects: development speed coordination and development scale coordination; Finally, taking Suizhou as an example, this paper carries out the diagnosis and analysis of the coordination between new energy and regional power grid development, and gives two specific suggestions on development timing and development scale, which has a certain reference value for relevant research.