The invention provides a stator structure of a motor with an exposed iron core. The stator structure comprises a stator front axle, a stator iron core and a stator rear axle which are connected in turn, wherein at least two installation hole assemblies are formed on the stator structure; each installation hole assembly consists of a coaxial installation hole assembly passing through the stator front axle, the stator iron core and the stator rear axle; the stator front axle, the stator iron core and the stator rear axle are connected and fixed in each installation hole assembly by screws; the periphery of each screw is sleeved with spring pins; the spring pins are arranged at the joint between the stator front axle and the stator iron core and between the stator iron core and the stator rear axle; and the excircle periphery surface of each spring pin is in close fit with and contacted with the inner wall of an installation hole of the stator front axle, the stator iron core or the stator rear axle. In the stator structure, reliable circumferential positioning among the stator front axle, the stator rear axle and the stator iron core is ensured by a connected positioning structure consisting of the spring pins; and a reliable sealing effect of the connection among the stator front axle, the stator rear axle and the stator iron core is ensured by a static sealing structure consisting of a ring-shaped groove with a barb and an O-shaped sealing ring.