Abstract: By measuring diurnal photosynthesis and transpiration, three afforestation vine species in Shandong Province of China, including Euonymus fortunei, Lonicera japonica and Parthenocissus tricuspidata, were studied in order to appraise their effect on decreasing temperature and increasing humidity by taking an observation of the carbon dioxide absorbing capacity and oxygen producing. Results showed that the capacity of carbon dioxide absorbing and oxygen producing of E. fortunei, L. japonica and P. tricuspidata were 7.32 and 5.32, 6.87 and 5.43, and 4.99 and 3.95 g/(m²·d), respectively. Moreover, the effect of decreasing temperature and increasing humidity was different among 3 vine species, the effect of L. japonica was the best, followed by E. fortunei, and the effect of P. tricuspidata was the least.