A hand-held pressure cleaning machine , comprising: a housing, having a handle for grasping; functional components, comprising a motor and a pump driven by the motor which are disposed in the housing; and a liquid inlet , disposed on the housing and capable of being connected to an external water source by using a water pipe, wherein the hand-held pressure cleaning machine further comprises an adapter configured to be connected between the liquid inlet and a portable container , and the hand-held pressure cleaning machine is connectable to the external water source by using the water pipe and connectable to the portable container by using the adapter ; the adapter comprises an adapter body and a liquid conveying tube , the adapter body comprises a first connection portion , the first connection portion comprises a first connection end and a second connection end in communication with each other, the first connection end is connected to the liquid inlet , the second connection end is connectable to an opening of the portable container , one end of the liquid conveying tube is connected to or integrally molded on the adapter body , and the other end of the liquid conveying tube is suitable to extend into the portable container ; the adapter body further comprises a second connection portion , the second connection portion is disposed in the first connection portion , and is in communication between the first connection end and the second connection end , and the liquid conveying tube is fixedly or detachably connected to or integrally molded on the second connection portion , and is suitable to extend into the portable container . a housing, having a handle for grasping; functional components, comprising a motor and a pump driven by the motor which are disposed in the housing; and a liquid inlet , disposed on the housing and capable of being connected to an external water source by using a water pipe, wherein the hand-held pressure cleaning machine further comprises an adapter configured to be connected between the liquid inlet and a portable container , and the hand-held pressure cleaning machine is connectable to the external water source by using the water pipe and connectable to the portable container by using the adapter ; the adapter comprises an adapter body and a liquid conveying tube , the adapter body comprises a first connection portion , the first connection portion comprises a first connection end and a second connection end in communication with each other, the first connection end is connected to the liquid inlet , the second connection end is connectable to an opening of the portable container , one end of the liquid conveying tube is connected to or integrally molded on the adapter body , and the other end of the liquid conveying tube is suitable to extend into the portable container ; the adapter body further comprises a second connection portion , the second connection portion is disposed in the first connection portion , and is in communication between the first connection end and the second connection end , and the liquid conveying tube is fixedly or detachably connected to or integrally molded on the second connection portion , and is suitable to extend into the portable container . <EOS>