According to the information released by official website, Hohhot Yili Health Valley is currently open to tourists, and you need to buy tickets to enter. According to the price information provided by official website, the price of adult tickets is 128 yuan, half price for students, the elderly, soldiers and the disabled, and free for children under 1.2 meters. Moreover, official website also provides a way to purchase tickets online, which is convenient for tourists to book tickets in advance. Therefore, you need tickets to visit Yili Health Valley in Hohhot.