A display panel and manufacturing method thereof, and a display device are disclosed. The display panel includes an array substrate and a counter substrate. The array substrate includes a main region and a peripheral region, the main region coincides with an orthographical projection of the counter substrate on the array substrate, and at least one glue dispensing zone is arranged in the peripheral region or the main region. Conductive adhesive is provided in the glue dispensing zone, and is electrically connected to a grounded unit; an electrostatic conducting structure is provided on the counter substrate, and the conductive adhesive is electrically connected to the electrostatic conducting structure.