A securely latched power connector assembly includes a male connector and a female connector connected with a first leading wire and a second leading wire, respectively. A first conductive terminal of the male connector has a first buckle portion for retaining a core of the first leading wire. A second conductive terminal of the female connector has a second buckle portion for retaining a core of the second leading wire. When the connectors are combined, a hollow plug of the male connector is inserted into a hollow socket of the female connector, and the first coupling structures of the male connector and the second coupling structures of the female connector are firmly coupled, while the second pin of the second conductive terminal being inserted into the hollow plug to contact with the first pin of the first conductive terminal, thereby achieving electrical connection.