The present invention provides a touch display panel, a manufacturing method of the touch display panel, and a touch display device. The touch display panel includes a flexible substrate and a metal mesh touch electrode layer. The metal mesh touch electrode layer is arranged on the flexible substrate, the metal mesh touch electrode layer includes multiple drive electrodes and multiple sensing electrodes. Multiple floating electrodes are disposed spaced apart from each other in each of the drive electrodes and each of the sensing electrodes. The floating electrodes are electrically insulated from the drive electrodes and the sensing electrodes and are placed in a layer the same as the drive electrodes and the sensing electrodes. Accordingly, interference signals from an organic light emitting diode layer are shielded and dispersed, and touch control sensibility is improved.