33 years old to give birth to a second child will not be too late, although the best age for childbearing is 24-28 years old, nowadays the standard of living is relatively high, the overall quality of the body is very good, generally not more than 35 weeks of pregnancy is not a high-risk pregnancy. If you have not been pregnant for more than half a year of normal married life, you can consider perfecting the relevant examination, if there are no other abnormalities, you can choose to conceive by intercourse during the ovulation period. If there is any abnormality, timely treatment. During the preparation for pregnancy, you must pay attention to good living habits, keep a happy mood, do not have stress. Usually more into the high protein diet, but also appropriate activities and exercise, enhance physical fitness. Taking folic acid tablets three months before and after pregnancy can be a good way to prevent neural tube malformations.