Using HadISST and ERSSTv5 SSTs, CMAP precipitation and ERA5 reanalysis data, this paper studies the relationship between spring sea surface temperature (SST) in the North Pacific and autumn precipitation in the the Maritime Continent. The results show that: 1) Victoria mode (VM) is the second mode of EOF analysis of spring SST in the North Pacific, which has a significant negative correlation with autumn precipitation in the Maritime Continent. 2) When VM is in positive (negative) phase in spring, it is usually accompanied by the positive (negative) phase of the Pacific meridional mode and the cold (warm) SST anomaly in the Northwest Pacific. The SST gradient would lead to the westerly (easterly) anomaly in the equatorial Pacific, impacting eastward propagation of equatorial Kelvin wave and leading to warm (cold) SST anomaly in the central and eastern Pacific. SST gradient and westerly (easterly) anomaly persist into autumn through Bjerknes feedback, so the mature El Ni?o (La Ni?a) event forms in autumn. Then, through the Walker circulation, the abnormal sinking (rising) movement, low-level divergence and high-level convergence (low-level convergence and high-level divergence) over the Maritime Continent occur, resulting in precipitation deduction (increase). 3) This interannual relationship between the variation of springtime VM and the autumn precipitation over the Maritime Continent has changed in 2003, which was a significant negative correlation from 1979 to 2002, but was insignificance from 2004 to 2020. The reason for this decadal change is that the North Pacific Oscillation altered from 2004 to 2020, which led to the weakening of the influence of the North Pacific Oscillation on the key area of southern SST part of VM, thus weakening the amplitude, weakening the meridional gradient of the key area of SST between the southern and northern part of VM, weakening the VM amplitude, and finally reducing the correlation coefficient.