Laser scattering by bubbles over a range of scattering angles from 5° to 175° is achieved using the bistatic optical geometry. In the meantime, laser scattering by water is measured. The scattering angle is changed by moving the receiving system on the condition that the transmitting system is fixed. The compress of the large dynamic range for the bubble scattering signal is solved and the change of the scattering volume with scattering angles in the receiver’s field of view is discussed. Then, the characteristics of the bubble scattering signal are analyzed and the power spectral density estimation method is put forward to process this signal. The experimentally measured and theoretically calculated results are compared, which show that both results are agreed and bubble scattering is about one order of magnitude higher than water scattering without bubbles. Results indicate that bubble scattering can be distinguished from water scattering, and thus bubbles can be detected by laser.