The invention discloses a rotary compressor assembly and a refrigeration circulating device with the same. The rotary compressor assembly comprises a liquid accumulator, a rotary compressor, an air jet pipe and a first reversing assembly. One slip sheet abuts onto the peripheral wall of a corresponding piston, and the other slip sheet selectively makes contact with or is separated from a corresponding piston. A backpressure chamber is arranged behind a slip sheet groove of the other one of two air cylinders. A first air jet channel and a second air jet channel which are used for enhanced vapor injection are formed in a compression mechanism. The second air jet channel is communicated with the backpressure chamber. The air jet pipe is communicated with the first air jet channel. The first revering assembly comprises a first connector, a second connector and a third connector. The first connector is communicated with the backpressure chamber, the second connector is communicated with the interior of the liquid accumulator, the third connector is communicated with the air jet pipe, and the first connector is selectively communicated with the second connector or the third connector. The rotary compressor assembly is high in running efficiency.