This paper reports on the combustion characteristics of emulsified Visbreaking bottom based fuel droplet by an improved equivalent comparison method ° The combustion characteristics under different degrees of fuel emulsification of Visbreaking fuel are investegated 。 The effect of water-content affects the latent heat, micro-explosion ,the ignition delay, the combustion rate ， and the combustion efficiency of the Visbreaking fuel are addressed ..As the watercontent in the Visbreaking fuel increases, the ingition delay ， the combustion rate , and efficiency increase.The burning time is shorter, the amount of residue is less, and the degree of smoking is lighter for emulsified Visbreaking fuel than that of un-emulsified Visbreaking fuel.