不要吵了可以用英文表达为 "Don't make a fuss." 这个表达源自于英文中的一个成语 "to make a fuss" ，意思是 "to make a lot of noise or complaints about something that is not very important" ，所以 "Don't make a fuss" 就是在告诉对方不要小题大做或过于担心。

例句：

Don't make a fuss, I can handle it. （不要小题大做，我能处理这个问题。）

There's no need to make a fuss, it's just a small mistake. （没有必要大惊小怪，这只是一个小错误。）

Please don't make a fuss, we don't want to attract too much attention. （请不要担心，我们不想引起太多的注意。）

I know you're upset, but there's no need to make a fuss. （我知道你很沮丧，但是没有必要大惊小怪。）