The main effects of maternal depression on the child include the following: 1. Language development: If the mother is depressed, she will show reluctance to talk and be unresponsive to external things. The child will also be affected by the negative emotions at this time, resulting in too little verbal communication between the mother and the child. In addition, the lack of language stimulation can lead to delayed language development in the child, affecting its normal language development. 2. Height and weight gain: Due to the mother’s depressed mood and depression, she will experience a loss of appetite, which in turn will seriously affect the secretion of milk. Reduced milk secretion will lead to insufficient feeding of the child, which will affect height and weight growth in the long run; 3, personality development: due to the mother’s depression, her care and attention to the child may be reduced, or she may bring negative emotions to the child, resulting in a long time in a tense and depressing environment, which will also affect her personality development in the long run, resulting in the child being introverted and easily depressed.