The invention discloses a conveying and positioning device for welding lithium power batteries. The conveying and positioning device for welding the lithium power batteries comprises a welding table and a welding clamp, and is characterized in that an overturning mechanism for overturning the welding clamp is arranged on the welding table; a feeding mechanism for arranging and feeding the lithiumpower batteries is arranged on one side of the welding table; a discharging conveying belt is arranged on the other side of the welding table; a transfer mechanism for transferring the lithium power battery group is arranged above the welding table; the feeding mechanism comprises an arrangement jig for arranging the lithium power batteries; feeding assemblies for feeding the lithium power batteries into the corresponding opening arrangement channels in a whole row are separately arranged on two sides of the arrangement jig; and each feeding assembly comprises a material box, a straight conveying belt and an arrangement conveying belt. The invention provides the conveying and positioning device for welding the lithium power batteries, automatic conveying and positioning of the lithium power batteries are realized, and the welding efficiency of the lithium power batteries in welding equipment is improved favorably.