For patients with arthritis, if they are recovering from arthritis, they can swim moderately. When swimming, be careful not to do too much exercise to prevent damage to the joints. Do not swim during the acute phase of arthritis, when swelling, fluid accumulation and even pain and dysfunction of the joints occur, and systemic and regular treatment is required to dissipate the local inflammation and relieve the acute phase. After the arthritis has stabilized and recovered from the treatment, swimming training can be done moderately, as swimming exercises are not very heavy on the joints and are also beneficial to the functional exercise of the joints. Patients with arthritis can swim and exercise, but they must master the timing, the amount of exercise, and the conditions for swimming and exercise.