The invention provides a solid removing method for solid-containing oil gas. The solid removing method for solid-containing oil gas includes the following steps that the preset absolute pressure in a separating tower is kept within 0.1-20 KPa, the solid-containing oil gas with the temperature of 350-500 DEG C is introduced into the separating tower at the same time and is gasified, the gasified oil gas is then immediately extracted out of the separating tower, and solids in the previous separating tower are cooled and removed when the solid depositing quantity in the separating tower reaches a preset value. Based on the principle, solid and liquid phases in the solid-containing oil gas are rapidly and efficiently separated.