The water culture display systems of 70 water parks in Jiangsu Province are investigated. The diversity of water culture display forms is evaluated. Based on the simple and typical correlation analysis, the connections between the indices of the display systems as well as the relationships among various parts of the display systems are discussed. The influences of the display content, display form and display path on the display effect are determined by the random forest model. The results show that the diversity of water culture display systems in Nantong, Taizhou, Suzhou, Wuxi and Changzhou is higher, while that in Xuzhou and Suzhou is smaller. The influence factors for the display effects are successively ranked as follows: display form>display path>display content, and the typical correlation coefficients are 0. 525 9, 0. 317 0 and 0. 209 7, respectively. It is indicated that the quantity of water landscape has the highest impact on the display effects.