Etoricoxib belongs to the group of non-steroidal anti-inflammatory and analgesic drugs that are used to treat sacroiliac arthritis. Etoricoxib belongs to the group of non-steroidal anti-inflammatory and analgesic drugs that are able to relieve symptoms such as joint pain and limitation of movement caused by sacroiliac arthritis. Etoricoxib and other non-steroidal anti-inflammatory analgesic drugs have similar side effects, such as gastrointestinal reactions, which may cause gastrointestinal bleeding, and it is recommended to take the drug after meals to reduce gastrointestinal irritation. It is not recommended for elderly patients with hepatic or renal insufficiency or women during pregnancy. Sacroiliac arthritis in addition to the use of etoricoxib treatment, but also need to actively find the cause of sacroiliac arthritis primary disease, such as ankylosing spondylitis caused by, but also add methotrexate, sulfasalazine and other drugs. In the use of etoricoxib to treat sacroiliitis, it is recommended that patients go to the hospital, under the guidance of the doctor regular use of medication.