The Shanghai Children's Fund reimbursement calculation formula is: payment = total hospitalization amount - total hospitalization amount - 300 (minimum payment for third-level hospitals) * 50% third-level reimbursement ratio.

According to the insurance payment standards of Shanghai Children's Fund, we know that the reimbursement calculation formula of Shanghai Children's Fund is: payment = total hospitalization amount - (total hospitalization amount - 300) * 50%.

Among them, 300 is the minimum payment for a tertiary hospital.

50% is the third-level reimbursement ratio.