The subsea tunneling technology in China is just in its starting stage. At present 2 subsea tunnels are under construction in China and the other subsea tunnels in China are still in research stage. As one of the new tunneling technologies, the subsea tunneling technology has many aspects for which cooperative researches by the tunneling experts are needed so as to boost the development of the subsea tunneling technology in China. On basis of the design documents of Jiaozhouwan subsea tunnel in Qingdao and the recommendations of the tunneling experts in China, the author makes some proposals on the waterproofing and drainage of subsea tunnels in the paper, which can provide reference for the tunneling colleagues.