1. The calculation method of alimony for two divorced children is:

(1) If you have a fixed income, you can generally pay 20% to 30% of your total monthly income for child care. Bear the one-child health care costs of more than two children, the proportion can be appropriately increased, but generally not more than 50% of the total monthly income;

(2) If there is no fixed income, the amount of childcare fee can be determined according to the total income of the year or the average income of the same industry with reference to the above ratio.

2. Legal basis: Article 28 of the Interpretation of the Supreme People's Court on Several Issues Concerning the Application of Laws in the Trial of Personal Injury Compensation Cases.

The living expenses of the dependents shall be calculated according to the degree of the dependents' loss of working ability and the per capita consumption expenditure of urban residents and rural residents in the last year where the Court of Appeal is located. If the dependant is a minor, it shall be calculated at the age of eighteen; If the dependent has no ability to work and no other source of income, it shall be counted as 20 years. However, for those over 60 years of age, the age will be reduced by one year for each additional year; Seventy-five years of age or older, calculated by five years.

2. What are the reasons why children born out of wedlock need alimony?

1, blood relatives. That is to say, when parents give birth to children, parents will raise underage children, which is a natural obligation and a legal obligation. It is meaningless for parents to care for their own flesh and blood if they don't fulfill their obligation of raising them.

2. Legal reasons. In other words, some children may not be born to their parents, but if the adoption relationship is formed according to the procedures prescribed by law, then the adopted children must also be treated as their own children, which is mandatory by law.