Electric control box assembly, air conditioner outdoor unit and air conditioner

The invention provides an electric control box assembly, an air conditioner outdoor unit and an air conditioner. The electric control box assembly comprises a mounting plate, the front surface of the mounting plate is provided with a first mounting area and a second mounting area, and the first mounting area is located above the second mounting area; the first circuit board is of an integrated structure and is arranged in the first mounting area; and the second circuit board is arranged in the second mounting area. The first circuit board integrates the first daughter board and the second daughter board of the related technology, so that the manufactured electric control box assembly is simpler in structure and smaller in size, and miniaturization of an air conditioner outdoor unit is better achieved. 本文提供一种电控盒组件、空调外机及空调器。电控盒组件包括：安装板，其正面设有第一安装区和第二安装区，第一安装区位于第二安装区的上方；一体结构的第一电路板，设于第一安装区；和一体结构的第二电路板，设于第二安装区。第一电路板将相关技术的第一子板和第二子板进行了集成，因此制成的电控盒组件结构更简单，体积更小，更利于实现空调外机小型化。