Detection ball and detection system

The invention discloses a detection ball, comprising a shell, at least one antenna radiation circuit and at least one feed-in terminal, wherein the feed-in terminal and the antenna radiation circuit are accommodated in the shell, the shell is provided with at least one metal piece, a first end of the feed-in terminal is connected with the antenna radiation circuit, and a second end of the feed-in terminal is connected with the metal piece on the shell. The invention further discloses a detection system. The detection ball and the detection system disclosed by the invention can be used for guaranteeing the communication quality, improving the signal to noise ratio, guaranteeing real-time transmission of field data and satisfying use demands in complex environments when adopting the metal shell.