In order to investigate the variation of electrical properties of seed melon rind in different parts and their correlation, eight electrical properties of seed melon rind in different parts were measured by parallel polar plate detection method using Gansu Jingyuan No.1 seed melon as the test material, the variation of electrical properties with frequency and correlation were analyzed, and mathematical models of the variation of electrical properties with frequency were established and verified. The results showed that there were significant differences between the electrical properties of seed melon pericarp in different parts with increasing frequency, with G and X showing monotonically increasing trend, and Rp, Cp, Z and Q showing monotonically decreasing trend; except for the peduncle part, the pericarp D in other parts showed monotonically increasing trend; there were highly significant negative correlations (P < 0.01) between Z and G, Lp and X in the peduncle part and equatorial part, and between Z and Q, Cp and Rp in the peduncle part and equatorial part. The regression results showed that the values of Z, G, Cp, Rp, X and D of melon peduncle and equatorial pericarp presented a Polynomial model distribution (R² >0.83) with the change of frequency; the model validation concluded that the values of Z, G, Cp, Rp, X and D of melon peduncle, and the equatorial pericarp showed a Polynomial model distribution (R² >0.83) with the change of frequency from 163.28 to 8 000 kHz. The model validation showed that the experimental values of Z and Lp in the pedicel and equatorial parts of the fruit skin were in good agreement with the model predictions in the frequency range of 163.28 - 8 000 kHz. Therefore, it is feasible to distinguish the electrical characteristics of different parts of the seed melon pericarp based on the parallel plate detection method. This result provides a theoretical basis for the electrical detection of the seed melon pericarp.