This article provides a systematic diagnosis and solution framework for nine common quality issues of linen for hotel purchasing managers and room management teams, covering: yellowing (OBA consumption/chlorine bleach abuse/hard water), pilling (yarn quality/excessive mechanical force), shrinkage (high temperature/excessive drying), decreased water absorption of towels (softener accumulation), fading (dyeing process/chlorine bleach damage), seam cracking (insufficient stitch length/overload), roughness and hardness (hard water/insufficient rinsing), moldy smell (moist storage/bacterial residue), and fabric holes (direct contact with bleach/mechanical damage) – each issue is provided with root cause analysis, corrective measures, and preventive strategies, accompanied by a 6-step systematic response process for quality issues.