A nozzle head cleaning module for a heat-melting type three-dimensional printer, comprising: a base housing including a main slope, a set of one or more horizontal planes being formed on a portion of the main slope; a main carrier received in the base housing, a scraper protruding upwardly from the main carrier, a set of one or more main slide pins in contact with the main slope protruding from the main carrier, the main carrier including a sub-slope, the main carrier being lifted or lowered obliquely along the main slope with respect to the base housing so as to lift or lower the scraper, wherein when disposed on the main slope, the set of one or more main slide pins is in contact with the main slope along a longitudinal direction of the main slope by multiple contact points; and when disposed on the set of one or more horizontal planes, the set of one or more main slide pins is in contact with the set of one or more horizontal planes by multiple contact points; characterized by a sub-carrier, the sub-carrier being accommodated in the main carrier, the movement of the main carrier moving the sub-carrier at the same time, a cover protruding upwardly being arranged on the sub-carrier, at least a portion of the sub-carrier being in contact with the sub-slope; and an interference structure arranged corresponding to the sub-carrier, wherein when the interference structure is in contact with the sub-carrier while the sub-carrier is moving, the interference structure pushes the sub-carrier to move along the sub-slope with respect to the main carrier, and the cover thereby ascends; and when the set of one or more main slide pins is moved onto the set of one or more horizontal planes, the set of one or more horizontal planes support the set of one or more main slide pins to maintain the cover in a raised position. a base housing including a main slope, a set of one or more horizontal planes being formed on a portion of the main slope; a main carrier received in the base housing, a scraper protruding upwardly from the main carrier, a set of one or more main slide pins in contact with the main slope protruding from the main carrier, the main carrier including a sub-slope, the main carrier being lifted or lowered obliquely along the main slope with respect to the base housing so as to lift or lower the scraper, wherein when disposed on the main slope, the set of one or more main slide pins is in contact with the main slope along a longitudinal direction of the main slope by multiple contact points; and when disposed on the set of one or more horizontal planes, the set of one or more main slide pins is in contact with the set of one or more horizontal planes by multiple contact points; characterized by a sub-carrier, the sub-carrier being accommodated in the main carrier, the movement of the main carrier moving the sub-carrier at the same time, a cover protruding upwardly being arranged on the sub-carrier, at least a portion of the sub-carrier being in contact with the sub-slope; and an interference structure arranged corresponding to the sub-carrier, wherein when the interference structure is in contact with the sub-carrier while the sub-carrier is moving, the interference structure pushes the sub-carrier to move along the sub-slope with respect to the main carrier, and the cover thereby ascends; and when the set of one or more main slide pins is moved onto the set of one or more horizontal planes, the set of one or more horizontal planes support the set of one or more main slide pins to maintain the cover in a raised position.