An intensity-differential squeezed state optical field prepared via four-wave mixing in a cesium atomic ensemble offers advantages such as wavelength matching with cesium atomic transition lines and a spatial multimode structure. This renders it valuable for quantum information applications. However, achieving high-compression-state optical fields through four-wave mixing in cesium atoms typically requires high pump light power and atomic pool temperature, thereby limiting its practicality. This study combines a six-mirror ring optical resonant cavity and a cesium atomic ensemble to achieve a single resonance of the pump light within the cavity while allowing the probe and conjugate lights to pass through in a single pass. This configuration improves pump light utilization and achieves cavity-enhanced cesium atomic four-wave mixing. Consequently, the required pump light power and atomic pool temperature are considerably reduced. Experimental results show that at an intensity-difference compression degree of -6 dB, compared to cavity-free four-wave mixing, the cavity-enhanced four-wave mixing reduces the required pump light power from 600 mW to 340 mW and the atomic cell temperature from 109 ℃ to 98 ℃. These findings offer a new solution for developing low-power, spatially multimode quantum light sources. Further, they are crucial for advancing the application of four-wave mixing in atomic ensembles.