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Eddies play an important role in water transport and energy balance in the ocean. Ocean observations show that eddies are not isolated, cyclonic eddies and anti-cyclonic eddies always form more stable structures: dipole eddies. Dipole eddies have more evident dynamic modulation compared to monopole eddies. Moreover, dipole eddies enhance the vertical movement of water so that they promote the propagation and distribution of heat, energy, and organic matter in the ocean, which affects the global biochemical process. To understand the coupling state of eddies better, the parameters’ variations of dipole eddies during propagation need to be examined. The quantitative analysis of the modulation effect can provide a reference for exploring the dynamic mechanism of dipole eddies. In this paper，the Archiving, Validation, and Interpretation of Satellite Oceanographic (AVISO) merged data from a combination of T/P, Jason-1, Jason-2, Jason-3, and Envisat missions are used to identify and track eddies in the global ocean during 1993-2020. It has a daily temporal resolution and a 1/4°× 1/4° spatial resolution. We proposed criteria to extract dipole eddies based on eddy identification and track data: the distance of eddy cores is less than twice the sum of their radii, and their total concomitant time is more than 60 days. Based on over 67500 dipole eddies that we have found, we analyze the variations of eddies’ parameters to reveal the role of the dipole in modulating eddies. The results show that dipoles are distributed in 10°N ~ 60°N and 11°S ~ 66°S . In general, dipole eddies are composed of eddies at a probability of over 15% and in the strong currents region, the frequency of dipole eddies formation is higher, even more than 35%. The dipole structure influences the movement and propagation of eddies, we demonstrate it by four dominating parameters of eddies, including amplitude, radius, EKE and vorticity. We find that the dipole structures increase the amplitude by 5~14%, radius by 2~9% and EKE by 4~13% while the dipole structures suppress the vorticity of eddies by less than 3%. What’s more, the various ratios of the parameters reach the peak at the middle of eddy normalized life. The dipole structures also promote the geostrophic velocity and propagation velocity. The geostrophic velocity of eddies is enhanced significantly in strong currents areas. In addition, the enhancement of geostrophic velocity of eddy is zonally distributed and decreases gradually from the equator to the poles. We conclude that dipole structures change the initial state of the eddies, causing some parameter variations: amplitude, radius, and EKE of eddies are increased by less than 13% while vorticity is reduced. The dipole structures also have a certain acceleration effect on eddies at propagation velocity and geostrophic velocity. It can be seen that the coupling of eddies with opposite polarity enhances the fluctuation of eddies and makes them interact with each other. The dynamic mechanism and ecological effect of eddies coupling based on better data sets are also the focus of future work.