Gout belongs to the metabolic diseases, rheumatoid arthritis belongs to the immune system diseases, not the same type of disease, so gout does not belong to rheumatoid arthritis, identified as follows: 1, gout is often clinically manifested in the lower extremities of the two main red, swelling, heat, pain, aggravated by heat. Rheumatoid arthritis is manifested in the joints of the extremities of the small joints morning stiffness, swelling, swelling, pain, no local redness, swelling phenomenon; 2, gouty arthritis occurs in middle-aged men, rheumatoid arthritis occurs in the young women; 3, gout is a pain attack in the acute phase, after the remission period with the same as a normal person. Rheumatoid arthritis is a chronic damage to the joints of the disease, so after a long time rheumatoid joints can appear deformation, deformity. Gouty arthritis is often misunderstood as rheumatoid arthritis, but the differential diagnosis is very simple, if the heat aggravates, it is gouty arthritis, rheumatoid arthritis is often reduced by heat.