The manifestations of too tight plaster fixation are as follows, after too tight plaster fixation, firstly, it will lead to more obvious swelling and pain in the part of the limb fixed by the plaster, due to too tight fixation, the part of the limb injury will gradually become more swollen and the degree of pain will be aggravated, and it can produce throbbing-like pain. Secondly, the distal end of the limb will gradually become pale, which indicates that blood circulation has been significantly impaired. If the plaster fixation is too tight, the plaster must be removed in time, and then re-fixed after the blood circulation of the limb is completely restored to normal, but the fixation must be appropriately tightened so as not to cause abnormalities in the blood supply of the distal limb.