看下这句话有没有语法错误

没有语法错误。

大小写没有照顾好。

With the development of society and economy, banking, as the essential part, is getting more and more important to our community.

Getting 小写
除了这个，我看着没问题！

as the essential part中的the应该是a吧,意思为"一个必要的部分"

With the development of society and economy, Banking, as an essential part, is getting more and more important to our community.

语法没的问题,至于定冠词the若与上下文有所关联也不会有错,单句来讲用不定冠词an更为合适

getting感觉用的不是很合适，有点chinglish的感觉

With the development of society and economy, Banking, as the essential part, is Getting more and more important to our community.

Banking 第一个字母要小写成b，the essential part 把the 改成 an essential part, 把Getting 改成becoming