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本文以热力学基本原理出发，详细探讨了岩浆中固态、液态和气态物质在岩浆上升过程中伴随着岩浆内压的降低其内能和温度的变化情况，指出当岩浆中存在独立气相（气泡）时，气体的热膨胀是促使岩浆升温新因素。文中还讨论了氧化反应放热、热散发和相变热在岩浆上升过程中对岩浆温度的影响，指出岩浆在地壳较深部位上升时，影响岩浆温度变化的因素只有热散发和相变热，它们均起着促使岩浆降温的作用；岩浆在地壳浅部或近地表条件下进一步上升时，岩浆中气体的热膨胀和岩浆氧化反应放热对岩浆温度的影响会越来越大，它们起着促使岩浆升温的作用，当它们的影响超过热散发和相变热的影响时，岩浆的温度随着岩浆的上升反而会升高，笔者称其为岩浆的反常升温。它最易于发生在中酸性岩浆喷发的过程中。同时笔者认为岩浆的反常升温是导致岩浆中已结晶矿物发生熔蚀的主要原因。
Based on the basic principles of thermodynamics, this paper discusses in detail the changes of internal energy and temperature with the decrease of magma pressure during the magma ascending in the magma, and points out that when there are independent gas (bubbles) in the magma , The thermal expansion of gas is the new factor to promote magma warming. The paper also discusses the influence of exothermic, thermal emission and phase transformation heat on the magma temperature during the magma rising process. It is pointed out that when the magma rises deeper in the crust, the factors that affect the magma temperature change are the heat dissipation and the phase transition heat, All of them play the role of promoting the cooling of magma. When the magma rises further in shallow or near surface crust, the thermal expansion of magma and the exothermic oxidation of magma oxidation will increase the magma temperature, The effect of magma warming is that when their influence exceeds the effects of heat dissipation and phase transformation heat, the magma temperature rises with the increase of magma, which I call the anomalous warming of magma. It is most likely to occur during the magmatic eruption. At the same time, the author thinks that the abnormal heating of magma is the main reason that leads to the dissolution of crystalline minerals in magma.