In this study, the producing areas of Zhengyan tea, Banyan tea and Zhou tea in Wuyishan City, Fujian Province were taken as the targets, and a comprehensive analysis was conducted to explore the effects of the contents and ecological stoichiometric ratios of soil carbon (C), nitrogen (N), phosphorus (P) and potassium (K) on soil fungal compositions and functions in different rock tea producing areas. The results showed that: 1) There were no significant differences in soil C and N contents among different rock tea producing areas, while P content in the producing area of Banyan tea was significantly higher than those in the producing areas of Zhengyan tea and Zhou tea (P<0.05). Soil K contents were significantly different among the three different producing areas (P<0.05), which was the highest in the producing area of Zhengyan tea. 2) Ascomycota, Basidiomycota and Mortierellomycota were the main fungal groups in the producing areas of Zhengyan tea, Banyan tea and Zhou tea, respectively; Chaetomium was the dominant fungal genus in the producing area of Zhengyan tea, whereas Saitozyma was the dominant fungal genus in the producing areas of Banyan tea and Zhou tea. 3) FUNGuild function prediction showed that animal pathogen-endophyte-epiphyte-fungal parasite-plant pathogen-wood saprotroph fungi, endophyte-litter saprotroph-soil saprotroph-undefined saprotroph fungi, and undefined saprotroph fungi were the most abundant functional subgroups in the producing areas of Zhenyan tea, Banyan tea and Zhou tea, respectively. 4) The Mantel test results showed that soil fungal community in rock tea producing area was mainly affected by C∶K, N∶K and P∶K. Significant positive correlation were found between K with Chaetomium, Fusarium and Aspergillus (P<0.01), C∶K, N∶K and P∶K with Saitozyma (P<0.01), N with Penicillium (P<0.05), and P with Saitozyma (P<0.05). Significantly negative correlation were found between C with Fusarium (P<0.01), K with Saitozyma (P<0.01), C∶N with Chaetomium, Penicillium and Trichoderma (P<0.01), N with Fusarium (P<0.05), K with Mortierella (P<0.05), C∶K and N∶K with Chaetomium, Fusarium and Aspergillus (P<0.05). In conclusion, soil fungal communities in different rock tea producing areas were mainly influenced by the stoichiometric ratios of C, N, P and K, rather than by the nutrient contents. These findings can offer a theoretical basis for assessing soil health and improving the function of soil ecosystem in tea gardens.