AMBTC compression technology is widely used in the field of information hiding. This method mainly selects the bitmap blocks for information hiding by judging high and low quantization values. Therefore， how to use more blocks simply and effectively plays a key role in the performance of the scheme. A reversible information hiding scheme based on four kinds of peak bitmap blocks is proposed in this paper. The scheme adopts two strategies to hide secret information： one is to hide secret information in four types of peak bitmap blocks， and the other is to hide secret information in bitmap blocks with equal high and low quantization values. The former adopts （7，4） hamming code information hiding strategy， and the latter uses secret information to replace bitmaps directly. At the same time， the lowest bit of the high quantization value will be identified and recorded to distinguish the first bitmap of the four types of peak bitmaps from other bitmaps. Experimental results show that the proposed scheme is superior to one peak bitmap scheme and two peak bitmap schemes， and greatly improves the amount of information hiding while maintaining high image quality.