According to an embodiment of the present invention, provided are an apparatus for monitoring a side trimmer knife and a side trimmer apparatus having the same. According to an embodiment of the present invention, the apparatus for monitoring a side trimmer knife comprises: a camera outputting a detection image by acquiring one of a side image of a side trimmer knife including an edge portion of the side trimmer knife and a blind spot image including an edge portion of the side trimmer knife; and a monitoring unit displaying the detection image.;COPYRIGHT KIPO 2017
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