The invention discloses a connecting plug structure for an LED lamp. The connecting plug structure comprises a power supply branching line, wherein one end of the power supply branching line is connected with a power supply while jacks are formed in the other end of the power supply branching line; and the jacks are matched with plugs connected with the corresponding LED lamps. The connecting plug structure is simple and practical in structure; the general line of power supply is provided with multiple jacks, so that the LED lamps can be used and replaced conveniently; and meanwhile, the connecting plug structure is low in cost and wide in application range.