The invention provides a segmented energy-saving conditioning integrated tobacco curing barn and a curing technology. The tobacco curing barn comprises a curing barn and a boiler room, wherein a moisture removal opening and a cold air door are arranged on the curing barn; the tobacco curing barn is characterized in that the curing barn adopts a channel type curing barn; a material inlet door and a material outlet door are respectively arranged at openings in two ends of the curing barn; a transfer rail is arranged at the bottom of the curing barn; a pre-wilting area close to the material inlet door, a conditioning area close to the material outlet door, a first yellowing chamber, a second yellowing chamber, a third yellowing chamber, a first color fixing chamber, a second color fixing chamber and a stem drying chamber are formed in the curing barn; hot air circulating channels are formed below side pulling doors between the first yellowing chamber and the second yellowing chamber, between the third yellowing chamber and the first color fixing chamber and between the second color fixing chamber and the stem drying chamber; a heating circulating device is arranged at the top of the curing barn. The curing barn has the advantages that the interior of the curing barn is divided into a plurality of areas, tobacco sequentially enters and is discharged through the transfer rail at the bottom of the curing barn, the space of the curing barn is reasonably utilized, the tobacco curing efficiency is improved, and the tobacco quality is greatly improved.