The invention discloses a multi-
nozzle injection
pipe assembly, a
gas burner and a gas
cooker, the multi-
nozzle injection
pipe assembly comprises a gas inlet seat, a main
nozzle, an auxiliary nozzle and / or a screwed plug, a main injection
pipe and at least one auxiliary injection pipe, the gas inlet seat comprises a gas
inlet channel, a main gas outlet seat, at least one auxiliary gas channel and at least one auxiliary gas outlet seat, and threaded holes are formed in the main gas outlet seat and the auxiliary gas outlet seat; the main injection pipe comprises a main cylindrical part, a main compression pipe part, a main compression
throat and a main diffuser pipe. The auxiliary injection pipe comprises an auxiliary cylindrical part, an auxiliary compression pipe part, an auxiliary compression
throat and an auxiliary diffuser pipe. The main air outlet seat is provided with a main nozzle, the auxiliary air outlet seat is provided with an auxiliary nozzle or a screwed plug, the air inlet seat and the main injection pipe are fixed and provided with an air gap, the air outlet end of the auxiliary injection pipe is communicated with the main diffuser pipe of the main injection pipe, and the auxiliary nozzle is communicated with the air inlet end of the auxiliary injection pipe. The
mixed gas of the auxiliary injection pipe enters the main injection pipe and is mixed with the
mixed gas of the main injection pipe, so that the air is sufficient, and the device is suitable for high power.