The invention discloses a tape indentation detecting machine. The detecting machine includes a carrier tape transmission mechanism, a frame, a light source support, light sources, an indentation detection camera, an industrial computer, a signal converter, a PLC (programmable logic controller), a carrier tape, a tape heat-sealing soldering iron block, a tape heat-sealing air cylinder, etc. Through the detecting machine, automatic detection on a tape and the carrier tape accomplishing hot melt indentation can be realized, the detecting machine can control the carrier tape transmission mechanism to stop running according to detection results, operators can conveniently and timely check and inspect unqualified tapes and carrier tapes, so that the operators can conveniently find problems and rapidly find the sources of the problems, and therefore, faults can be effectively eliminated, parameters operated by each part can be re-adjusted and controlled, the phenomenon of the follow-up appearance of unqualified hot melt indentation can be effectively avoided, the rate of finished products of hot melted tapes and carrier tapes can be increased, detection efficiency can be enhanced, thus, the detecting machine is high in detection precision, good in detection effect, and more convenient and faster in usage.