In Germany, recent development for the past 10 years of legislative experience was mostly formed as “reservation of amended order”, which is different from the traditional form of “Congress’s supervision to administrative order”. Parliament had direct power to amend regulatory order. Legislative power is authorized to Congress by the constitutional law. Congress authorizes iniciatively to executive department for rulemaking. That does not mean to be deprived from supervising authority. Authorized power to rulemaking is just the overflowing authority of the executive branch, but not its original and monopole authority. Therefore, when a Congress supervises to the authorized item, that does not mean to invade executive power or to conflict the principle of check and balance. Parliament amends to administrative order, the contents is regulatory order, the amended object is the regulatory order, not the law, in order to distinguish the amending procedures between law and regulatory order, the latter should be done in simple Congress’s resolution. Finally, there is limitation in the situation of amending regulatory order by the parliament. Parlimaent should be restrained by constitutional law and its original self-will, and should avoid to invade the core-function of executive power.