To operate the dryer correctly, incorrect operation of rotary drum drying equipment can cause varying degrees of consumption and damage to the dryer. This article analyzes the misconceptions to avoid when operating the dryer. 1. At temperatures between 250-380 ℃, it is strictly prohibited to add damp materials with excessive moisture into the solid sliding material basin to prevent it from collapsing. 2. It is strictly prohibited to use iron shovels and furnace rakes to impact the refractory materials in the furnace, solid sliding material basins at the bottom of the kiln, and the walls of the discharge pipes. 3. It is strictly prohibited to let water enter the furnace and machine of the flamethrower at any time. 4. When the dryer is working, it is strictly prohibited for people or bodies to directly contact its metal shell, especially the cylinder, chimney, furnace door, and discharge funnel, to prevent burns. 5. Regularly check the anchor bolts, connecting components, motors and reducers of supporting equipment, and speed controllers to prevent looseness, noise, impact, heating, and leakage. Users should have a general understanding of several misconceptions to avoid during the operation of these dryers, in order to prevent improper handling.