The invention discloses sitting type bent arm lifting fitness equipment and belongs to the field of fitness equipment. A main purpose of the invention is to provide fitness equipment specially aimingat muscle exercises of upper limbs and shoulders for vast fitness enthusiasts and fitness industry operators. According to simulation and improvement of a curved arm lifting action principle, the aimof developing the muscle strength is achieved by overcoming the weight of a counterweight. In order to achieve the aim, various parts are processed, and include a counterweight unit, a left side guidepulley, a right side guide pulley, a support frame, a traction rope, a bolt, a left side rotating wheel, a right side rotating wheel, a backrest, a swing arm, a grip, a cushion, an adjusting pin andan adjusting bracket. After the various parts are processed, the parts are installed according to corresponding installation procedures and then operated and used by following the instructions duringuse. The sitting type bent arm lifting fitness equipment disclosed by the invention is capable of helping the fitness enthusiasts to build body and perform professional training, can also help patients suffering from related injuries to perform rehabilitation training, and is convenient fitness equipment.