Heat exchanger header pipe adapting base capable of avoiding sliding during soldering

The utility model discloses a heat exchanger header pipe adapting base capable of avoiding sliding during soldering. The adapting base is clamped on the pipe wall of a heat exchanger header pipe by an arc clamping part at the bottom, so that a through hole of the adapting base faces a liquid-inlet and outlet hole of the header pipe; and a plurality of heat exchange flat pipes are arranged on the other side of the header pipe. When the arc clamping part is clamped on the pipe wall of the heat exchanger header pipe, a lower arc clamping part is slightly bigger than an upper arc clamping part, and the bottom edge of the lower arc clamping part firmly pushes against the heat exchange flat pipes. The adapting base is clamped on the pipe wall of the heat exchanger header pipe by the pretightening force of the arc clamping part, so that the through hole of the adapting base faces the liquid-inlet and outlet hole of the header pipe; and during soldering, the header pipe, the adapting base and the heat exchange flat p