This invention relates to a portable tea set with observation window, which is comprised by upper cap, tealeaves vessel, teacup and lower cap, featuring in: said tealeaves vessel is equipped with a one-body molded U-shaped filter
sieve and an observation window outside, so that you can observe how tea is prepared and U-shaped filter
sieve can filter tealeaves and tea water automatically, besides, bottom of tealeaves vessel and internal
screw thread of lower cap can interact with top of teacup and bottom of external
screw thread, thus, whole tea set can be assembled as required, in addition, owing to its small capacity and combination of whole structure, such tea set is portable and convenient to prepare tea water; meanwhile, it can separate tealeaves from tea water, so that tealeaves shall not be soaked in high temperature water for long time, quality of tealeaves can be preserved accordingly.