Sacroiliac arthritis is usually better when sitting than standing. 1. Sacroiliac arthritis should reduce joint weight-bearing, when standing, the weight of the upper half of the body are pressed to the joints, than sitting to bear the load, easy to cause sacroiliac joint pain aggravation. If sacroiliac arthritis pain is obvious in the acute stage, bed rest. 2. Maintain a good sitting posture when sitting, don’t stilt legs, the seat should be soft and moderate, sit for a while to appropriate activities. Sleep on a hard bed at night. Normally, you can also participate in appropriate labor or physical exercise, such as swimming or cycling. Sacroiliac arthritis should reduce joint weight-bearing, avoid trauma, and actively treat the disease to avoid further aggravation.