Hello, the child is rolling on the ground. It should be the first time that he has met some of his own needs in this way, so he found it a good way to meet, so he will often roll in the future. This is actually an operational conditioned reflex, that is, if the child rolls on the ground, the result is that you meet the child's needs or comfort and convince the child in various ways. Then, this is an intensive process of a child rolling on the ground. If you encounter a similar situation in the future, the child will know that he is going to lie on the ground and roll. Therefore, using psychological knowledge, the way to solve this kind of thing is that if you are still rolling, all you need to do is ignore it and make him feel that it is meaningless. Don't comfort the child before he takes the initiative. Perhaps, at first, it will take him longer to take the initiative, but later, the time will gradually shorten until he stops rolling.
I hope my answer will satisfy you, Xi Anruisi Psychological Counseling.