首先从应用的角度给出了“热点”的定义 .再从固体地球物理方面指出大峡弯是一个“高温、低密、低磁、负重力、多地震、强构造运动”地区 .根据已有资料初步定出了“热点”中心位置 ,发现各气象站 1月份的地气温差 (ΔT)与距热点中心的距离呈反比 .利用地表面能量平衡方程计算得到“热点”中心的地下热流强度可达 2 5W /m2 .最后指出 ,此“热点”区是全球降水最多、热带森林纬度最高的地区 ,也是气候变化的“启动区” . First of all, the definition of “hot spot” is given from the perspective of application.And from the aspect of solid geophysics, it is pointed out that the Daxia bend is a region of “high temperature, low density, low magnetic, negative gravity, multi-earthquake and strong tectonic movement. The location of ”hot spot“ center was initially determined and found that the temperature difference (ΔT) between ground temperature and air temperature was inversely proportional to the distance from the hotspot center in January. The ground surface heat flux density was calculated by the surface energy balance equation 2 5W / m2. Finally, this ”hotspot“ is the most precipitated area in the world and has the highest latitude in tropical forests. It is also a ”starting point" for climate change.