The work aims to verify the feasibility of particle image velocimetry (PIV) technique in the process of studying the flow field measurement of packaging engineering. The model of the plate heat exchanger with compound corrugation flow channels was made with ultra clear glass and the images of observed area were collected based on PIV technique. The cross-correlation analysis method was used for calculation to obtain the flow field data. Such data were compared with numerical simulation results for verification. The experiment results showed that the flow pattern was clear, and the data and numerical simulation were basically consistent. PIV technique can be applied to the measurement of flow field of non-contact packaging engineering with complex flow and the ultra clear glass is a kind of ideal material that can provide reference for the exploring ideas to expand such field.