Abstract
The invention provides a bottle (2) and bottle cap (5) having a containing body of the bottle that has a containing space (21) and a bottle opening (22) where the containing space (21) is capable of providing a liquid to be filled into the containing body of the bottle through the bottle opening. The bottle and bottle cap include a first connecting portion (3), at least an assembling-and-disassembling body (4), and a bottle-cap body (5). The first connecting portion is positioned at the bottle opening while the assembling-and-disassembling body has a second connecting portion (41) at the inner-diameter's circumference thereof and a first assembling portion (42) at the outer-diameter's circumference thereof. The bottle-cap body having a second assembling portion (51) is capable of engaging with the first assembling portion to make the bottle-cap body position on the assembling-and-disassembling body.