The invention provides a method for removing solid from oil gas containing solid. The method comprises the following steps: adding the oil gas containing solid mixing a first auxiliary gas with temperature of 300-550 DEG C into a separation tower having a preset manometer pressure of 0.01-0.50 MPa, adding a second auxiliary gas with temperature of 350-550 DEG C from the bottom of the separation tower, wherein the ratio of the amount of the first auxiliary gas to the amount of the second auxiliary gas is 3-100:1-100, performing gasification separation of the oil gas containing solid to separation gas and solid, making the separation gas, the first auxiliary gas and second auxiliary gas guide from the top of the separation tower, making the solid deposit in the separation tower, and clearing away the solid in the separation tower when the solid deposit rate reaches the preset value. The method for removing solid can separate solid-liquid two-phase in the oil gas containing solid highly efficiently and thoroughly.