The present disclosure relates to the technical field of string light sockets, and discloses an assembled type waterproof male and female plug for string light connection. The assembled type waterproof male and female plug includes a first electrical wire and a second electrical wire; the first electrical wire is provided with a male connector; the second electrical wire is provided with a female connector; the male connector and the female connector can be plugged to each other; the male connector includes a first assembly part and a second assembly part; the first assembly part is provided with a first conductive terminal group; and the first conductive terminal group is provided with at least two plugging ends for connecting the female connector.