摘要: 简介了中高能核反应中四个基本问题方面的新进展．它们是热化与统计热平衡、气化与相变、瞬时碎裂、阈下Ｋ＋产生与Ｋ＋／π＋增强． The new development of four problems in intermediate and high energy reaction is breifly commented. The four problems are thermalization and statistically thermal equilibrium, evaporization and phase transition, simultaneous breakup and subthreshold K +production and K +/ π + enhancement.