Abstract: The present invention relates to a gas fuse cock embedded with a flow rate sensor and an automatic gas safety shut-off device having the same, in which a flow rate sensor unit is injection-molded integrally with the gas fuse cock, and the flow rate sensor is mounted to reduce leakage of gas without a separate connecting component, and the present invention provides a gas fuse cock embedded with a flow rate sensor and an automatic gas safety shut-off device having the same, in which the flow rate sensor is directly embedded in a housing of a gas valve without a separate connecting tube, and a connecting portion is eliminated, thereby improving safety against leakage of gas.