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In order to solve the problem of phase noise deterioration caused by large shaking amplitude and drastic temperature change of overhead optical cable, a fiber frequency transmission scheme based on electronic phase compensation is designed by using bidirectional transmission and pre-compensation technology; Firstly, the frequency transmission test is carried out on a real link with a total length of 133km including 30km overhead optical cable, and the phase noise index is increased by 28dB compared with unidirectional transmission equipment. The the bidirectional transmission optical fiber frequency transmission equipment was used to conduct a comparison test with all 133km buried optical cables, and the transmission of overhead optical cables worsened by 4dB in the case of class 5 wind, but it can still meet the needs of frequency transmission under overhead optical cables; The research proves that the frequency transmission technology based on electron phase conjugation can effectively solve the problem of phase noise deterioration caused by frequency signal transmission of overhead optical cable.