The invention relates to online canning equipment for fruit and vegetable cans. The equipment comprises a rack, a motor, a conveying belt, a controller, a charging hopper, lifting rods, a speed reducer and a crank mechanism; the conveying belt is mounted on the rack and is driven by the motor to operate; the motor is controlled by the controller to operate; the controller is mounted beside the rack through a supporting rod; the charging hopper is arranged above the middle of the conveying belt; two sides of the charging hopper are connected with the vertically arranged lifting rods; lower ends of the lifting rods penetrate through sliding sleeves; the sleeves are fixed on the rack; the lower ends of the lifting rods are connected with the crank mechanism through connecting rods, and a crank-sliding block lifting mechanism is formed; and a crank is driven by the motor through the speed reducer to operate. The equipment is semi-automatic, the labor intensity can be reduced, the canning efficiency for the fruit and vegetable cans in the canning link can be improved, and thus the production efficiency of the fruit and vegetable cans can be improved.