We give a survey of two-parameter Markov processes, including 1) Introduction, 2) Definition and properties, 3) Brownian sheet and two-parameter Ornstein-Uhlenbeck processes, 4) Markov random fields, 5) Two-parameter Markov processes and potentials.

• 本文综述两指标马尔可夫过程的理论；包括:1)引言；2)定义与性质；3)布朗单与两参数Ornstein-Uhlenbeck过程；4)马尔可夫随机场；5)二参数马程与位势.