The hot summer days, young people in groups, eating cold drinks, blowing air conditioning, seems to become a permanent, unchanging theme of the hot summer. Behind the cozy and comfortable, young friends, do you think of the hidden danger of disease may have been buried. Many rheumatic diseases are often related to cold, hot summer, young people eat too much cold food, stay in the air conditioning room all day, the body unknowingly by the erosion of cold, wet, when the autumn and winter, joint disease often occurs. Some friends sleep on cool mats, blowing air conditioning, sleep overnight, the morning will feel the waist stiffness, a few activities on the good, of course, most friends will be fine, but the accumulation of months, and only when you get older, joint problems. But some of you, especially young men, should be wary of ankylosing spondylitis when you experience similar symptoms. Ankylosing spondylitis is a chronic systemic inflammatory disease of unknown etiology that primarily affects the spine, with sacroiliac joint lesions being the most common. The most significant changes are fibrosis and bony ankylosis of the joints. As a result, many male patients can be seen to develop a hunchback at a young age. Ankylosing spondylitis is characterized by self-remission or exacerbation. Some patients do not receive timely diagnosis and treatment due to family and local medical conditions, and severe cases often develop spinal ankylosis and hip involvement within 3-5 years, making self-care difficult, so active treatment during the acute phase is important. If the diagnosis is obtained early, mild deformity does not affect the patient’s life. In conclusion, timely detection of problems and timely access to specialists is a guarantee of good health.