1.如果help做动词,则没有help to each other,因为help一般是及物动词,后面直接就加宾语each other了.
如：We should help each other.
我们应该互相帮助.
2.不过,如果help是名词的话,则有可能出现help to each other,比如：offer/give help to each other.
例：The twins often offer help to each other.
这对双胞胎经常相互提供帮助.