What's the difference between medical insurance, accident insurance and social security medical insurance?

Accident medical insurance is mainly to protect the reasonable and necessary medical expenses incurred by the insured due to the accidents agreed in the insurance contract during the insurance period. The insurance company will bear the corresponding insurance compensation liability according to the insurance contract within the agreed scope and amount of protection. Medical insurance refers to the insurance that pays insurance money on the condition that the medical behavior agreed in the insurance contract occurs, and provides protection for the medical expenses of the insured during the medical treatment. Medical insurance collects medical insurance premiums from people threatened by illness in advance in the form of contracts. When the insured goes to a medical institution for medical treatment, the medical insurance institution will give certain economic compensation. This is the difference between medical insurance, accident insurance and social insurance.