The invention discloses an inlet valve fixing assembly for a wall-mounted washing machine and a wall-mounted washing machine. The inlet valve is provided with multiple fixing columns; the inlet valve fixing assembly comprises a fixing stand, wherein at least one fixing column on the inlet valve is suitable for connecting with the fixing stand; a support board, wherein the support board and the fixing stand are arranged with intervals so that the inlet valve is supported by the support board when the inlet valve is installed. According to the inlet valve fixing assembly for a wall-mounted washing machine, when the inlet valve is installed, the inlet valve can be supported by the support board without holding the inlet valve by constructors; therefore, it is convenient for constructors to install and fix the fixing column and the fixing stand, so as to facilitate the installation and fixing of the inlet valve.