The invention relates to a tilting driving control device for an RTG lifting appliance. The tilting driving control device for the RTG lifting appliance comprises a PLC, a frequency converter cabinet, a TRIM motor, a TRIM motor brake, a braking resistance box and a clockwise and anticlockwise rotation extreme limiting switch, wherein an incremental encoder is arranged in the TRIM motor; the TRIM motor is driven by a frequency converter; the frequency converter can be used for automatically recording a pulse signal output by the incremental encoder. The tilting driving control device for the RTG lifting appliance has the advantages that the frequency converter is used for controlling the TRIM motor, so that the TRIM motor executes smooth driving, redundant auxiliary power supply capacity of an RTG is reduced, and the influence on other sets of electrical equipment caused by operation of the TRIM motor is alleviated; after the TRIM motor is started to operate, the frequency converter can be used for automatically recording the pulse number of the incremental encoder, and the TRIM motor is subjected to position control according to the pulse number, so that the precision of position control on a TRIM can be improved, the onerous operation steps of a driver on a TRIM mechanism can be reduced, and the working efficiency is improved.