The utility model discloses a high-voltage distribution box assembly for a battery pack and the battery pack with the high-voltage distribution box assembly. The high-voltage distribution box assemblycomprises a BDU, a panel and a high-voltage connector, the panel is suitable for being fixed to the BDU, a connector via hole is formed in the panel, the high-voltage connector is fixed to the panel,and the high-voltage connector penetrates through the connector via hole and then is connected with the BDU. According to the high-voltage distribution box assembly provided by the utility model, thehigh-voltage connector can be directly connected with the BDU by arranging the panel fixed with the BDU, so that a wire harness or a copper bar connected with the high-voltage connector does not needto be additionally arranged outside the BDU, the manufacturing cost is saved, the assembly is convenient, and the electric leakage risk is reduced.