In　terms　of　the　quantitative　causal　principle,　this　paper　obtains　a　general　variational　principle,　gives　unified　expressions　of　the　general,　Hamilton,　Voss,　Holder,　Maupertuis-Lagrange　variational　principles　of　integral　style,　the　invariant　quantities　of　the　general,　Voss,　Holder,　Maupertuis-Lagrange　variational　principles　are　given,　finally　the　Noether　conservation　charges　of　the　general,　Voss,　Holder,　Maupertuis-Lagrange　variational　principles　axe　deduced,　and　the　intrinsic　relations　among　the　invariant　quantities　and　the　Noether　conservation　charges　of　all　the　integral　variational　principles　axe　achieved.