Abstract： Based on the collateral disease theory， the pathogenesis of limb numbness after stroke is as follows： After a stroke，pathological products such as phlegm，fire，stasis，and toxin accumulate in the collaterals，affecting the circulation of qi and blood in collaterals at all levels. This leads to obstruction of collaterals or insufficient nourishment of collaterals， which blocks the transportation of qi and blood from the brain to the limbs， resulting in numbness. The key to treating collateral diseases lies in unblocking the collaterals. Huang Di Nei Jing（The Yellow Emperor's Inner Classic） proposes a specific method for unblocking collaterals， namely the contralateral puncture method combined with collateral puncture and bloodletting. This article elaborates on the theoretical basis and clinical application of collateral point contralateral puncture and bloodletting in the treatment of limb numbness after stroke， aiming to provide ideas for the treatment of this disease.