The invention relates to the technical field of electrical components, in particular to a power plug and a power socket. The invention discloses a power plug and a power socket matched for use. The power plug comprises a base body, wherein at least two plug AC terminals are fixed in the base body; two plug DC terminals are also fixed in the base body; and each plug AC terminal and each plug DC terminal are connected with independent connecting lines respectively. The power socket comprises a base, wherein an inner cavity of the base is formed in the base; the shape of the inner cavity of the base is matched with that of an insertion end of the base body; and socket AC terminals which are matched with the plug AC terminals in a manner of one-to-one correspondence and socket DC terminals which are matched with the plug DC terminals in a manner of one-to-one correspondence are arranged in the inner cavity of the base. The two plug DC terminals are arranged on the power plug, the two socket DC terminals are arranged on the power socket and the power plug and the power socket are matched for use, so that the condition that electric equipment can still normally run after AC conduction is blocked is ensured.