Character Change its Position When Animation Apply on It

I am facing a problem from 2 days..I have made 3 animation in file using mocaps and then i have import one fbx file into the Unity. Now i have played the animation using legacy. Now when i placed the character the unity..And when i hit the play button, when the animation run the character will change its position where it was placed.But it should start animation where it was placed it the scene view...Can any body suggest me any solution..