Water is most familiar matter for us, but a lot of experiments and abnormal effects of water manifest that it is not only composed of H2O, i.e., it has a complicated molecular structure. However, what is on earth water? This is worth to study deeply. In this Issue we think that the following problems should be studied and contained.

(1)Really molecular structure and its experimental evidences;
(2) Investigations of abnormal effects and phenomena of ware and their mechanisms.
(3)Correct methods of magnetization of water and the inspection methods of magnetized effect of water;
(4) experimental and theoretical studies of Properties of magnetized water and confirmation of its magnetism;
(5) The mechanism of magnetization of water and corresponded theory;
(6) Discussion of application of magnetized water on industry, agriculture, medicine and science research.