The invention discloses a loudspeaker unit support structure and a loudspeaker system, including a loudspeaker installation unit and a loudspeaker unit. The loudspeaker unit is fixedly installed in the loudspeaker installation unit. According to different types of loudspeaker installation units, different loudspeaker unit fixing methods can be selected and used , multiple speaker units are set in the speaker installation unit, the speakers of each speaker unit are set independently, and they are started together when in use to increase the overall playback volume of each speaker unit, reduce the playback burden of a single speaker, and fix the speaker inside the support mechanism by bolts , the electric telescopic rod drives the clamping arm to press inward to fix the speaker. When dismounting, the fixing bolt is released, and the anti-magnetic sleeve is turned to make the push rod feed upwards to realize the ejection of the speaker. Pry up to avoid damage to the speaker caused by metal tools during assembly and disassembly, which is more practical.