不对.
so是副词,只能修饰形容词或副词；such 是形容词,修饰名词或名词词组.
譬如：She is so beautiful.
= She is such a beautiful girl.
so 还可与表示数量的形容词many,few,much,little（little表示“小”时除外）连用,形成固定搭配.