A gardening fluid connection device comprising: a body on which multiple retainers are retained; a resilient element; and a fitting sleeve fitted on a first end of the body, the fitting sleeve including multiple spaced engagement teeth, the resilient element abutting against the body and the fitting sleeve, the fitting sleeve rotating along the body reciprocatingly and pushing the resilient element so as to open or close the gardening fluid coupling device, hence the multiple retainers of the body are removed or retained when the fitting sleeve presses the resilient element or is pushed by the resilient element, respectively, so that the multiple retainers of the body connect with or remove from a water supply device, respectively; wherein the body further includes at least one retaining element, and wherein the fitting sleeve further includes at least one shoulder respectively located above and contacting with the retaining element so as to maintain the fitting sleeve on a closing position and not press downward, wherein when the fitting sleeve rotates to an opening position, the shoulder removing from the retaining element of the body so that the fitting sleeve presses the resilient element to release the multiple retainers and the multiple retainers connect with or remove from the water supply device, characterized in that the body includes a stop rib arranged thereon so that the multiple spaced engagement teeth of the fitting sleeve are pushed by the resilient element to abut against the stop rib of the body, and includes at least one locking element formed inside the stop rib, each locking element being located on a side of each spaced engagement tooth. a body on which multiple retainers are retained; a resilient element; and a fitting sleeve fitted on a first end of the body, the fitting sleeve including multiple spaced engagement teeth, the resilient element abutting against the body and the fitting sleeve, the fitting sleeve rotating along the body reciprocatingly and pushing the resilient element so as to open or close the gardening fluid coupling device, hence the multiple retainers of the body are removed or retained when the fitting sleeve presses the resilient element or is pushed by the resilient element, respectively, so that the multiple retainers of the body connect with or remove from a water supply device, respectively; wherein the body further includes at least one retaining element, and wherein the fitting sleeve further includes at least one shoulder respectively located above and contacting with the retaining element so as to maintain the fitting sleeve on a closing position and not press downward, wherein when the fitting sleeve rotates to an opening position, the shoulder removing from the retaining element of the body so that the fitting sleeve presses the resilient element to release the multiple retainers and the multiple retainers connect with or remove from the water supply device, characterized in that the body includes a stop rib arranged thereon so that the multiple spaced engagement teeth of the fitting sleeve are pushed by the resilient element to abut against the stop rib of the body, and includes at least one locking element formed inside the stop rib, each locking element being located on a side of each spaced engagement tooth.