The space and load-bearing capacity of offshore platforms are limited，and the dissolution time of hydrophobically associating polymers is long. The polymer-graded forced stretching device greatly shortens the dissolution time of those polymers and reduces the footprint of the dispensing system. To further optimize the polymer dispensing system and reduce its footprint，we designed a high-gravity instant dissolving device. Through laboratory experiments，the influence of filler pore sizes，the high-gravity factor，and packing ring combinations on polymer dissolution time was studied，and the optimal polymer dissolution conditions were determined. The research results reveal the high-gravity instant dissolving device can considerably shorten the polymer dissolution time. The basic dissolution time of AP-P4 was cut by 56.25%，from 80 min to 35 min，with the mixing temperature of 45 ℃，the mixing concentration of 5 000 mg/L，the packing ring combination inside the device of 300 μm/100 μm，and the high-gravity factor of 1 307.