Children undergo gradual progression in their ability to differentiate correct and incorrect pronunciations of words, a process that is crucial to establishing a native vocabulary. For the most part, the development of mature phonological representations has been researched by investigating children's sensitivity to consonant and vowel variation, with a much lesser focus on lexical tones. The current study investigates sensitivity to lexical tones in word recognition with specific attention to role of perceptual salience. Chinese-speaking preschoolers were presented with familiar words that were correctly pronounced, substituted for a subtle tone variant (Tones 2 and 3), or substituted for a salient tone variant (Tones 1 and 4). Results demonstrated that subtle tone variants were mistakenly perceived as correct pronunciations and only salient tone variants were recognized as mispronunciations. Findings suggest that tone integration follows a more complex developmental course that previously concluded.