在二维ＢＴＷ模型的基础上建立了准流体系统的计算机仿真模型．研究了临界点的存在性和系统的临界指数行为，建立了一个新的临界参量，确定了具体的算法和程序，得到了一些有意义的曲线．结果表明，二维准流体确实存在自组织临界性． Based on the two-dimensional BTW model, a computer simulation model of quasi-fluid system is established. The existence of critical points and the critical exponent behavior of the system are studied, a new critical parameter is established, and the specific algorithms and procedures are determined. Some meaningful curves are obtained. The results show that two-dimensional quasi-fluid does exist self-organized criticality.