Camera very tall!

hi everybody
when i add my main wall of 3dmodel my fps is very tall

are you actually possessing the character? i see another camera actor in your scene you could be in that one or you may not be possessing a pawn at all in which case you would have the defualt spectator.

before adding my model camera is good but when add model camera is tall

are you trying to use a character or just a camera in the level? is the camera overlapping any collision?