Abstract: A uniaxial winding device having a main body, comprising a main shaft provided on an upper part of the main body, and a fixed seat provided on a lower part of the main body, wherein the upper part of the main shaft is provided with a tapered block and a fixing pin which limits the tapered block, wherein a spool and locknut are mounted on the main shaft on a first side of the tapered block, wherein a rocker arm which is able to rotate the main shaft is provided on a second side of the tapered block, wherein a resistance adjusting mechanism is provided on the main shaft which can adjust the rotational resistance on the spool.