The invention discloses a current distribution optimization method based on a distributed access type LCC-MMC hybrid direct current system, which can effectively improve the direct current power consumption capacity of a receiving-end power grid. According to the current distribution optimization method, an optimization model of the MMC current distribution coefficient is established according tothe characteristics of the distributed access type LCC-MMC hybrid direct current system, and the problem of direct current power consumption blockage caused by overload of a receiving-end power grid element is avoided by optimizing the current distribution coefficient. In addition, the method fills the blank of the control strategy of the distributed access type LCC-MMC hybrid direct current system, and avoids the problem that the direct current power cannot be completely consumed due to element overload, so that the safe and stable operation characteristic of the receiving-end power grid is improved, and the problem of consumption blockage of the distributed access type LCC-MMC hybrid direct current power can be effectively solved.