Using the daily reanalysis data of ERA5 and the daily stations data of precipitation provided by the China Meteorological Administration, the influence of the “combined modality” of the Silk-Road Pattern(SR) and the East Asia-Pacific Pattern(EAP) teleconnection on the heavy precipitation in the early stage of Meiyu in the Yangtze-Huai River region in 2020 is analyzed, it shows that the “combined modality” can trigger continuous precipitation in the Yangtze-Huai River region. At the beginning of June 2020, the negative-phases SR(Silk-Road) and the positive-phases EAP(East Asia-Pacific) appeared at the same time, and the phase difference reached the maximum value in June. The synergy of the two lead to an abnormally early time for the Meiyu in 2020. The main manifestations are as follows: (1) The negative-phases SR causes the acceleration of the westerly jet, which promotes strong high-level divergence over the Yangtze-Huai River region on the south side of the jet stream entrance area. (2) The negative-phases SR is conducive to the eastward movement of the South Asian High, and the positive-phases EAP is conducive to the westward movement of the Western Pacific Subtropical High, and the two move towards each other. The negative-phases SR and the positive-phases EAP had the largest difference on June 9. At this time, the South Asian High and the West Pacific Subtropical High overlapped at about 120°E, which is conducive to continuous precipitation in the Yangtze-Huai River region. (3) There is a pair of anomalous “cyclone-anticyclone” circulations related to the positive-phases EAP in the middle and low latitudes of low-level East Asia, which makes the low altitude (20~35°N, 100~125°E) prevailing strong southwest airflow. The northerly airflow at mid-latitudes is conducive to the transportation of dry and cold air to the south. It merges with the warm and humid southwest airflow over the Yangtze-Huai River region, bringing about strong water vapor convergence and making the local upward movement of the atmosphere more intense.