采用实时有限温度QCD形式,提出了QGP中快速运动粒子的衰减率的自治求解方法,克服了通常计算中红外发散的困难,不需要手加进磁质量作为红外截断.当耦合常数很小时,给出了横胶子和夸克的衰减率,并估计了它们在RHIC和LHC实验中的弛豫时间. In the real-time finite temperature QCD form, an autonomic solution to the decay rate of fast moving particles in QGP is proposed, which overcomes the difficulty of usually calculating mid-infrared divergence and does not require the addition of magnetic mass as infrared cutoff. When the coupling constant is small, The decay rates of cross-gluons and quarks were estimated and their relaxation times in RHIC and LHC experiments were estimated.