Electrowinning technology using a hydrocyclone electrolyzer can recover valuable metals from low-concentration sources, which is impossible in commercial technological processes due to the special structure of the cyclone. In this study, platinum (< 100 ppm) was effectively recovered using a hydrocyclone electrolytic cell, and the reduction behavior of platinum was analyzed using cyclic voltammetry. As a result, it was confirmed that the reduction peak of platinum was observed from around -0.1 to -0.15 V. In the cyclone electrolytic extraction process, the platinum recovery behavior was analyzed under varying electrolytic conditions such as the initial platinum concentration, applied current, and applied voltage. Most notably, as the applied current increased from 2.9 to 4.9 A, the recovery rate of platinum also increased. Ultimately, more than 99.3% of platinum was recovered after about 3 hours in all experiments. These results demonstrate that electrowinning using a hydrocyclone electrolyzer is an effective process with high economic potential for the recovery of PGMs from dilute solutions.