The invention discloses a coupling type heat pump waste heat recovery system which comprises a front-end compression type heat pump unit, a lithium bromide absorbing type heat pump and a tail-end compression type heat pump unit, wherein the front-end compression type heat pump unit, the lithium bromide absorbing type heat pump and the tail-end compression type heat pump unit are in coupling connection sequentially. The lithium bromide absorbing type heat pump comprises a generator, a condenser, an evaporator and an absorber, wherein the generator, the condenser, the evaporator and the absorber are sequentially connected through a connection pipeline with expansion joints. The front-end compression type heat pump unit comprises a first evaporator, a first condenser and a first compressor and is used for heating application water through heat exchange by utilizing a waste heat source in the first evaporator and then conveying the application water to the evaporator of the lithium bromide absorbing type heat pump to serve as working medium solution, and therefore front-end circulation is formed. The tail-end compression type heat pump unit comprises a second evaporator, a second condenser and a second compressor, and the second evaporator forms circulated communication sequentially with the absorber and the condenser of the lithium bromide absorbing type heat pump through a compression type heat pump, and the second condenser is communicated with a condenser pipeline of the lithium bromide absorbing type heat pump to continually heat the application water.