The invention discloses a sodium-sulfur battery pack in the field of energy storage. The sodium-sulfur battery pack comprises a frame main body with an opening in the upper part, wherein a hoisting positioning structure is arranged on the peripheral wall of the frame main body; a positioning plate is arranged at the bottom of the frame main body; a plurality of positioning grooves in rectangular arrangement are formed in the top surface of the positioning plate; an insulating mica sleeve is fixed on each positioning groove; each insulating mica sleeve is internally provided with a sodium-sulfur battery cell, and each sodium-sulfur battery cell respectively comprises a shell, a positive pole lug and a negative pole lug; the sodium-sulfur battery cells are connected through battery connecting pieces to form the sodium-sulfur battery pack; and the positive pole lug and the negative pole lug of each sodium-sulfur battery cell are connected with the corresponding battery connecting pieces through argon arc welding. The sodium-sulfur battery pack has the beneficial effects that assembling of the sodium-sulfur battery pack cannot cause damage to sodium-sulfur battery module interior heating and temperature control electronic parts and components, and the operating space is large, so that the sodium-sulfur battery pack is applicable to robot automated welding, the production efficiency is improved, and the production cost is reduced.