Portable air conditioner suitable for various occasions

The invention provides a portable air conditioner suitable for various occasions, which comprises an indoor unit and an outdoor unit, wherein the indoor unit and the outdoor unit are connected with each other via an indoor and outdoor connecting assembly; fast switching of the indoor and outdoor connecting assembly is realized via a fast connecting component; the indoor unit comprises an automatic drainage system which is characterized in that a water level induction passage is formed on the inner side surface of a clamping groove formed in one end of an indoor unit water-containing plate; an electromagnetic induction switch is in interference fit with an electromagnetic induction switch clamping groove; a floating ball is limited in the water level induction passage; an indoor unit drainage pipe is connected to the water-containing plate; an outdoor unit drainage pipe is connected to an outdoor unit water pump; after the indoor unit drainage pipe and an outdoor unit connecting water pipe are butted via the f