If the baby's bones and body are well developed, he can start training to crawl in about seven months. If you can't crawl for nine months, you should strengthen training to help your baby crawl or play games to attract him to climb forward.

　　Babies need training to learn to crawl. Parents can let them lie on the bed first, then make them support themselves with their hands, bend their legs to the baby's abdomen, and then pat the baby's ass behind or put their hands against his feet, which can stimulate the baby to crawl forward.

　　You can also use talking toys or food to attract them to climb forward, or get along with other babies and crawl together.

　　At this time, parents should guide him to move his hand forward, another leg, another hand and another leg, so that the child will be pulled out after a few moves. If you start training after more than 7 months, he will climb in 8 months, not less than 9 months.