The invention provides a six-pulse TCT-type controllable paralleling reactor. Primary side windings of the reactor are linked in a star-shaped mode and are connected in an electrical power system in parallel; control windings of secondary side windings are linked in a star shape, the outgoing line side of each phase of winding is connected with an antiparallel thyristor valve set to form a circuit, continuously changing reactive power can be provided by controlling a triggering angle of a thyristor, and the thyristor valve set is connected with a by-pass circuit breaker in parallel and used for being closed when a fault occurs or a system operates stably so as to bear the load current; compensation windings of the secondary side windings are linked in a triangular shape and are connected with a filtering unit, the harmonic current flowing into the system is reduced, and the quality of electric energy is improved. Compared with the prior art, the six-pulse TCT-type controllable paralleling reactor can serve as a dynamic reactive power compensation device and arranged in a switching station in a super/extra-high voltage alternate current long line or a transformer station of a wind electricity concentrated output system and a direct current transmission system, and the function of reactive voltage control is played.