The utility model discloses a popped device of timber based on microwave heating, it includes high density field microwave single mode heating chamber (4), the connection is in high temperature hot air device (3) of high density field microwave single mode heating chamber (4) both sides, reveal inhibitor section (2) with the symmetrical microwave that high temperature hot air device (3) links to each other, install the symmetrical material lift transmission (6) in inhibitor section (2) are revealed to symmetrical microwave, the transmission band passes high density field microwave single mode heating chamber (4) and inhibitor section (2) are revealed to symmetrical microwave, install transmission band limit adjusting device (5) on the transmission band of lower part, the transmission band with move cabinet equipment transmission (1) and link to each other. The utility model has the advantages of reasonable design, the initial single mode chamber microwave device who utilizes the high field intensity on the popped equipment of timber, not only timber expansion ratio is high, and the high -usage of microwave, and the mouth is presented to difficult pollution of easy attachment of the popped in -process of timber, and the probability of striking sparks is little, the safety and stability.