The invention relates to a sealed lead-acid battery with multiple horizontal winding cells. The sealed lead-acid battery comprises a battery case, wherein a battery cover is arranged on the top surface of the battery case; a through hole is formed in the middle of the battery cover and is internally provided with a sealing valve; the two sides of the sealing valve are respectively provided with a pole; one end of each pole is exposed while the other end of each pole extends into the battery case; more than two layers of horizontal winding cells are arranged in the battery case; and negative electrodes of the winding cells in the battery case are connected with one another in parallel by a left bus bar and then electrically connected with one pole, and positive electrodes of the winding cells in the battery case are connected with one another in parallel by a right bus bar and then electrically with connected the other pole. According to the invention, the mechanized mass production of winding-type sealed lead-acid batteries with capacities ranging from 0.5 Ah to 500 Ah can be achieved. The sealed lead-acid battery provided by the invention is simple in structure, reliable in performance and low in cost.