Abstract: The multi-hole entry tube widely used in engineering has some shortcomings in adjustment of flow characteristics and processing accuracy. In this paper, an alternative method of few-hole entry tube was proposed. By hydraulic experiment, the flow characteristics of multi-hole and few-hole entry tubes, such as the distribution of resistance coefficient, the corresponding relationship between flow rate and pressure drop, were compared and studied. The results show that the flow characteristic of the few-hole entry tube with 12.0 mm in diameter is almost the same as that of the multi-hole entry tube with 6.2 mm in diameter, which all can meet the design requirements. It is verified that the alternative method of few-hole entry tube proposed in this paper is feasible. In addition, the flow characteristics can be more effectively adjusted by the few-hole entry tube. Moreover, the empirical correlation between the resistance coefficient of the entry tube and its structure parameters is formulated, which can be used in relevant experiment or engineering.