A drilling system (100) and a method (400) for identifying a kick are disclosed. The drilling system includes a drilling assembly (103) and a monitoring system. The drilling assembly is configured to be connected between a platform (101) and a wellhead (105), for drilling a wellbore (132). The monitoring system is disposed on the drilling assembly and includes a detection device (109, 119) and a processor. The detection device is configured to obtain a characteristic parameter associated with a returning fluid (116) from the wellbore and obtain a density parameter of the returning fluid. The processor is configured to identify an occurrence of a kick based on the obtained characteristic parameter and the obtained density parameter.
