The invention relates to an electronic water meter with a three-proofing function. The electronic water meter comprises a base, a shell, a
water flow metering component, a spherical valve component and a main circuit board, an installation groove used for installing the main circuit board and an installation cavity used for installing a
control circuit board of the
water flow metering component are formed in the inner side of the shell, the installation groove and the installation cavity are both filled with organic
silicon gel which can cover the corresponding circuit boards, and the wire outlet terminals in the shell are each coated with a
silica gel layer; the shell is provided with first through holes allowing
water vapor to get in and out. According to the electronic water meter, through structure design is adopted, a seal ring does not need to be arranged on the joint of the whole shell,
air tightness sealing is not needed, the
water vapor can pass through freely through the first through holes, the internal and
external pressure balance in the water meter shell is guaranteed, the problems that in the water meter using process, plastic deformation occurs due to the imbalance of the internal and
external pressure, and the
water vapor is accumulated due to the fact that for the
air tightness structure, the water vapor can easily get in but not easily get out are effectively solved, the reliability of the water meter is improved, and the service life of the water meter is prolonged.