A ground structure of a braided wire comprising: a braided wire having a covered electric wire and a cylindrical braid covering the covered electric wire , and a device case provided with an insertion hole for inserting a connector therein, the connector being attached to a terminal of the covered electric wire , a cylindrical part that stands upright from a periphery of the insertion hole toward an outside of the device case being provided on the device case , wherein the ground structure further comprises, a shield band , and an end portion of the braid being directly put on an outer side of the cylindrical part of the device case , and wherein the shield band is wound and crimped onto the outer side of the braid put on the outer side of the cylindrical part , so that the braid and the device case are electrically connected, characterized in that the ground structure further comprises: a housing of the connector having a fitting part that is fitted in said cylindrical part of the device case , an attachment hole having a shape that is recessed from a leading end of the housing in a longitudinal direction (Y1), a terminal block having a pair of locking lances for locking the terminal block to the housing of the connector , and a pair of convex locking parts provided on an inner surface of the attachment hole , wherein the pair of locking lances respectively has an arm that is bent in a diametrical direction of the braided wire and a locking protrusion that protrudes from the arm in said diametrical direction, wherein the locking protrusion and the pair of convex locking parts are locked by inserting the pair of locking lances into the attachment hole of the housing . a braided wire having a covered electric wire and a cylindrical braid covering the covered electric wire , and a device case provided with an insertion hole for inserting a connector therein, the connector being attached to a terminal of the covered electric wire , a cylindrical part that stands upright from a periphery of the insertion hole toward an outside of the device case being provided on the device case , wherein the ground structure further comprises, a shield band , and an end portion of the braid being directly put on an outer side of the cylindrical part of the device case , and wherein the shield band is wound and crimped onto the outer side of the braid put on the outer side of the cylindrical part , so that the braid and the device case are electrically connected, characterized in that the ground structure further comprises: a housing of the connector having a fitting part that is fitted in said cylindrical part of the device case , an attachment hole having a shape that is recessed from a leading end of the housing in a longitudinal direction (Y1), a terminal block having a pair of locking lances for locking the terminal block to the housing of the connector , and a pair of convex locking parts provided on an inner surface of the attachment hole , a housing of the connector having a fitting part that is fitted in said cylindrical part of the device case , an attachment hole having a shape that is recessed from a leading end of the housing in a longitudinal direction (Y1), a terminal block having a pair of locking lances for locking the terminal block to the housing of the connector , and a pair of convex locking parts provided on an inner surface of the attachment hole , wherein the pair of locking lances respectively has an arm that is bent in a diametrical direction of the braided wire and a locking protrusion that protrudes from the arm in said diametrical direction, wherein the locking protrusion and the pair of convex locking parts are locked by inserting the pair of locking lances into the attachment hole of the housing . <EOS>