How i can put gameObject into GuiTexture?

I make two sprite in game Object and I want to place this game object in GuiTexture

There are two fundamental problems with what you are trying to do. The first is that GUITextures live in Viewport space while your world objects live world space. The second is that, for any particular camera that sees a GUITexture, the GUITexture will be on top. The only way I can think of to place object inside a GUITexture is to use two cameras. The GUITexture needs to be placed on a layer that only the lower camera sees. The other objects need to be seen by another camera with a lesser depth. As for converting coordinates, see:

Camera.WorldToViewportPoint()

Camera.ViewportToWorldPoint()

I don’t know if it works for your game, but it would be considerably easier if all the images are in world space. Consider display the image you are now displaying using a GUITexture using a Quad or a Sprite.