The invention provides a wedge bolt parallel groove clamp and a transmission tower. The wedge bolt parallel groove clamp is used for a transmission line and comprises a body and a clamping mechanism, wherein a groove penetrating through the body is formed at the top of the body, the clamping mechanism is arranged in the groove in a sliding mode, two passages for accommodating leads are formed in two side walls of the clamping mechanism opposite to the groove, the body and/or the clamping mechanisms are conductive bodies, and the clamping mechanism is used for adjusting the two passages for clamping leads. The tight contact between the leads and the wedge bolt parallel groove clamp can be effectively guaranteed, the clamping effect of the wedge bolt parallel groove clamp is improved, a good clamping effect can also be kept even if the wedge bolt parallel groove clamp runs for a long term, then stable operation of the leads is ensured, and the wedge bolt parallel groove clamp does not need periodical maintenance, so that the workload is reduced.