An electrical connection structure for a PCB and an electroplating frame, and a modular lamp. The modular lamp comprises a plurality of light-emitting modules (100, 200, 300, 400, 500). Each light-emitting module comprises a housing (110) and a lamp plate (130) arranged within the housing, a light source and conductive connectors electrically connected to the light source being arranged on the lamp plate, an outer plate of the housing being provided with two sets of conductive strips (102) surrounding the outer side wall and protruding from the outer side wall, the two sets of conductive strips being respectively electrically connected to two electrodes of the lamp plate via the conductive connectors. After the plurality of light-emitting modules have been assembled and joined together, adjacent light-emitting modules are in contact and electrically connected via the conductive strips. The modular lamp is provided with the plurality of light-emitting modules, the shapes of the light-emitting modules are flexible and variable, each module is designed independently, and after the light-emitting modules have been joined together, adjacent light-emitting modules are electrically connected via the conductive strips on the outer side walls and may be combined to form a variety of shapes. The present invention is simple in operation, and strong in combination operability.