Abstract: Based on conventional meteorological observation data, automatic weather station hourly and minute high-resolution data, data from four wind profiler radars, the CMA best-track dataset, and NCAR (National Center for Atmospheric Research) reanalysis data, this study investigates the heavy precipitation process caused by Typhoon Doksuri in Shandong Province from July 28 to 30, 2023. The results indicate that: (1) The heavy precipitation event caused by Typhoon Doksuri in Shandong can be roughly divided into three stages, dominated sequentially by the typhoon inverted trough, the typhoon residual low-pressure circulation, and the southeasterly low-level jet. (2) Typhoon inverted trough stage: Characterized by convective precipitation, the onset of heavy rainfall is closely linked to the strengthening and thickening of mid-level northeasterly winds, accompanied by the transition of low-level winds from northeasterly to southeasterly. The increase in the low-level jet index exhibits a delayed response in indicating precipitation. The sudden increase in vertical wind shear corresponds to the initiation of precipitation, while its decrease signals the end. (3) Typhoon residual low-pressure circulation stage: Dominated by stratiform precipitation, the occurrence of heavy rainfall aligns with the strengthening of mid-to-upper-level southeasterlies and the intensification of low-level northeasterlies turning into southeasterlies. A uniform southeasterly profile throughout the column corresponds to continuous light rain. The surge in the low-level jet index precedes the intensification of rainfall by approximately 1 hour, and the oscillation of this index relates to sustained light precipitation. Prior to heavy rainfall, the mid-level vertical wind shear increases first, leading the strong precipitation by 3 to 4 hours. The expansion of the strong mid-level shear center toward both upper and lower levels acts as an indicator for heavy precipitation. (4) Southeasterly jet stage: A significant enhancement of low-level southeasterly winds corresponds to heavy rainfall. The increase in the low-level jet index precedes the peak rainfall intensity by about 2 hours. During this stage, the mid-level vertical wind shear remains consistently high at around 10 m·s^-1. Before heavy precipitation occurs, the mid-level vertical wind shear further increases, leading the intense rainfall by 5 to 6 hours. (5) The vertical velocity measured by the wind profiler radars closely matches the timing of precipitation, exhibiting a positive correlation between velocity magnitude and precipitation intensity.