at the fornt of和in the front of意思一样吗？

意思基本一样，但是介词不同

不同的
at the front of 是指物体外部的前方

如：There are some steps at the front of the house. 房子前面有些台阶。

in the front of 是指物体内部的前方

如：In the front of the classroom there is a blackboard on the wall.
教室前面墙上有块黑板。