research on something类似于research about something，这个时候research一般作名词用，这两个短语的意思都是“关于．.....的研究”，只是on比about正式。
research into something因为用了介词into（进入；到．.....里面），因此它表示“搜集大量数据和信息的深入彻底的研究”，这个时候research既可以作名词又可以作动词。
research on：n.研究；(关于）．..的研究；research +sth
1.Research on the novel coronavirus is far from conclusive.
2.Further research on the effects of different characteristics on intelligibility is necessary.
3.A new centre for research on novel coronavirus was inaugurated today at Wuhan.
research into: n. & v.（就．..方面）研究
1.I did some research into this problem.
2.He is engaged in research into the packaging of the new product line.
3.American and Europe will pool research into hydrogen-powered fuel cells.
4.The domestic scholars' research into this problem is not sufficient enough.