In need of study of atmospheric convective boundary layer(ACBL) in laboratory model , we developed a set of equipments used for measuring temperature and velocity field in water. Single-probe sensor made of copper was used for measuring mean temperature, and multi-probe sensor made of platinum was used for measuring temperature fluctuation . These sensors can be moved by motors. Microparticles illuminated by a laser light sheet and particle tracing velocimetry (PTV) technology were used for measuring velocity. Response of these equipments is fast, and resolution is high, so the laboratory model can be provided with reliable experimental methods. From the measuring results, the structure of the laboratory model of ACBL, especially of entrainment zone, can be studied at large. The measurement errors of temperature and velocity and their estimation were also analyzed. The error of measuring temperature mostly came from random error, and the random error is about 0.005℃. The error of measuring velocity mostly came from systematic error .How to decrease error was prosposed in the paper.