The thesis researches the survival analysis of the current status data because the study of odds rate on Medicine and Epidemiology Preventive Medicine has been very crucial. Therefore, the estimation study aims at the odds rate, which refers to the ratio of mortality rate and survival rate. In the thesis, where we use Bernstein polynomial to illustrate the odds rate, the maximum likelihood estimator and comparison are conducted through Markov chain Monte Carlo─Simulated Annealing. The simulation turns out well and its result accords with not only the large-sample properties, but also the theory.