Mengyin Mengshan has a warm temperate monsoon continental climate, with an annual average temperature of 12.8℃, precipitation of 998 mm, frost-free period of 1 9 1 day, mild climate, abundant rainfall and distinct four seasons. Up to now, there is still a folk saying that there are "seventy-two flowers and rain" in Mengshan area every year. Suitable climatic conditions gave birth to rich biological resources in Mengshan. According to the survey, the forest coverage rate in Mengshan is over 98%, including 43 species of trees 129, 59 species of shrubs 16, 200 species of herbs, 559 species of medicinal materials 150, and wild animals 15 15. The Center for Eco-environment Research of Chinese Academy of Sciences has systematically monitored Mengshan by using the world's advanced equipment. The content of negative oxygen ions in the air of Mengshan is 854 1.67 per cubic centimeter. Therefore, Mengshan area is called "natural oxygen bar", ultra-clean area and the best green fitness tourist area in China.

Mengshan is also a good place for sightseeing and leisure. Looking at Mengshan from a distance, it is dark green. Looking at the mountains at close range, the trees cover the sky, only smelling the birds, not seeing the trace, full of greenery, cleaning the soul. This is one of the eight ancient scenes in Mengyin, "Mengshan full of green". For example, at the turn of spring and summer, forsythia flowers, azaleas and peach blossoms compete for each other, and the peaks turn continuously, and colorful flowers and green grass flood in, which is called "the flower tide in the beautiful sea". Climbing up the stairs, there is a long and narrow valley behind. The current is swift and colorful, forming a waterfall, big or small, at the peak of the heavy rock. From a distance, the waterfalls are connected, which is called "cascade waterfalls". Water curtain cave is the best place to show the style of Mengshan Waterfall. There are scenic spots such as Shengsentai and Yuanyang Pine around water curtain cave. Lucky tourists can watch the sunrise in sunny weather and the sea of clouds in Yunmeng Peak. The elevation of Yunmeng Peak is1108m, which is the third highest peak in Shandong Province. It stands between the two peaks and carries the sky on its shoulders. This is a good place for adventure travel. Yunmeng West Peak is towering like a pillar, soaring into the sky, and no one has reached the top so far.