A water meter is widely using to measure the amount of water flow but sometimes the water inside a water meter takes a phase transition from liquid to solid (or freezing) at a temperature below a freezing point in winter. This phase transition causes the serious malfunction such as blocking of a flow, shutdown of a process and breakage of a water meter. In this paper, a new design structure of a water meter, which occupies a bellows tube, is proposed for preventing the breakage by freezing and the prevention effect of freezing breakage was verified using finite element analysis. When a working pressure of 0.3MPa at new design of a water meter was applied, a maximum magnitude of Von-Mises stress was 81.78MPa and it belonged to a safe range compared by a yield stress of a brass material. In addition, the water meter at the lower temperature could afford to properly work because the inside volume of the bellows tube expanded during an ice generation. Therefore, it can be confirmed that the new water meter having a bellows tube effectively prevents the breakage.