If the salary does not reach 5000 yuan, you don't have to pay personal income tax, and of course you don't have to fill it in. If children's education, continuing education, housing loan, renting house, serious illness medical care and supporting parents do not meet the requirements, that is, children under 3 years old, parents under 60 years old, no continuing education, no mortgage, no renting house and no hospitalization, they cannot be deducted.