Abstract: How to solve the problem of disorderly strip wrapping on a Carrousel coiler used for a PL-TCM unit in China was investigated. The forces acted on the coiler in its coiling process was analyzed, thus revealing that the disorderly strip wrapping is essentially because of the internal bending stress of strip between the last mill stand and the coiler. Discussing the reason why the internal bending stress forms in strip, the problem of disorderly strip wrapping was solved via the mechanical measures taken appropriately. On the other hand, the quantitative relationship between the angular acceleration of the big rotating disc as a past of the coiler and its angular position during rotation was analyzed with the intention of providing theoretically the reference and solution to improve the stability of dynamic control of the coiling tension in the process of rotation of the big rotating disc.