本文指出,在热力学系统的任意一个平衡过程中,可能存在许多放热过程和吸热过程。因此,应用热力学第一定律的积分形式(Q=△E+A)计算出的Q,可能既不是Q_吸,也不是Q_放,而是吸热和放热的代数和。本文正确地给出,热力学系统的任意一个过程中吸、放热的计算方法,从而能正确计算循环效率。文章最后一段讨论了多方过程。 This paper points out that there may exist many exothermic and endothermic processes in any equilibrium of the thermodynamic system. Therefore, the Q calculated using the integral form of the first law of thermodynamics (Q = ΔE + A) may not be either Q_sorption nor Q_alpha, but rather an algebraic sum of endotherms and exotherms. In this paper, we give the calculation method of suck and exothermic in any process of thermodynamic system correctly, and calculate the cycle efficiency correctly. The last paragraph of the article discussed the multi-party process.