The aim of this study were to find out category shift types used in thetranslation of novel To Kill A Bird and to describe of how category shift is translatedin the novel from English into Indonesian. This study were conducted by usingdescriptive qualitative method. The data of the study were words, phrases, andclauses in the novel To Kill A Mockingbird which is translated into Indonesian byFemmy Syahrianni. It was found that there were 280 data in the novel from Englishinto Indonesian. The data analysis were taken by listing and bolding. Documentarysheets used as the instrument to collect the data. The data were analyzed based onMiles and Huberman (2014) by condensation which consists of selecting, focusing,simplifying, abstracting and transforming and then data display by using table inorder to get easy analyzing the data. The result of this study were (1) there were fourtypes of category shifts found in the novel To Kill a Mockingbird namely; structureshifts (36.78%), class shift (27.14%), unit shift (32.5%) and intra-system shift(3.27%). (2) The process of category shifts in the translation novel by havingmodifier-head in source language changed into head-modifier in target language,adverb in source language changed into verb in target language, one unit in sourcelanguage changed into some units in target language. and plural in source languagechanged into singular in target language.