The invention discloses an extra-high voltage AC/DC optimal power receiving proportion evaluation method for a receiving-end power grid. The method comprises the following steps: firstly, listing possible extra-high voltage AC/DC power receiving schemes of the receiving-end power grid; secondly, obtaining feasible extra-high voltage AC/DC power receiving schemes through load flow, short circuit and stable check; and finally selecting the scheme with the best economy as the optimal scheme to calculate the optimal power receiving proportion. The extra-high voltage AC/DC optimal receiving proportion evaluation method has the beneficial effects that the extra-high voltage AC/DC optimal power receiving proportion of the receiving-end power grid of the planning level year can be determined; the grid investment is reduced under the premise of ensuring safe and stable operation of the power grid; and the economic benefits are improved.