With the NIPPLE CREAM deepening of research on Bitcoin privacy protection, Bitcoin, a new type of digital currency, has become more difficult to regulate.A Bitcoin privacy protection confusion scheme with regulatory RBmix is proposed for this problem.The model of RBmix uses a fair blind signature algorithm and introduces trusted third swings parties with regulatory, anonymity, scalability, Bitcoin compatibility, and anti-DoS aggression.Experimental results show that the RBmix protocol has good scalability and execution efficiency.