A direct-inserting small connector includes an elastic piece and a pin. The elastic piece is installed on a light source plate having a through hole and is completely located above the light source plate. One end of the elastic piece is an output end electrically connected to the light source plate, and the other end thereof forms a clamping end corresponding to the through hole in terms of position. The pin is installed on a drive plate. One end of the pin is an input end electrically connected to the drive plate, and the other end thereof is a direct-inserting end capable of being directly inserted into the clamping end to obtain an electric connection. This connector is suitable for manufacturing high power LED lamps.