The invention relates to half-wavelength power transmission hybrid tuning system based on a power electronic inversion technology and belongs to the field of ultra-high voltage alternating current power transmission. The system comprises a tuning power transmission line, a distributed tuning system and a centralized turning system, the distributed tuning system is distributed along lines on the tuning power transmission line, and the centralized tuning system is disposed at the two ends of the tuning power transmission line. The hybrid tuning system has the advantages of being large in distributed tuning transmission capacity, large in power limit, low in overvoltage and overcurrent level, and also low in centralized tuning short circuit current level, and therefore the problem that a traditional tuning method cannot control the overvoltage and the overcurrent levels along the lines is solved, the load flow change can be adapted, the overvoltage and the overcurrent on the line are restrained, and the system also has the advantage of high power transmission efficiency.