The features of microgravity cryogenic fluid management (CFM) technologies were analyzed in this study

and existing space experiments on CFM technologies were reviewed. Based on the upgrade requirements of technology readiness levels

gravity-dependence analysis of 25 CFM techniques was performed. Moreover

several approaches to acquire low-gravity or microgravity environments are presented and their characteristics are compared herein. To realize further technique verifications

a series of valuable suggestions on space experimental scheme designs are provided. It should be noted that the properties of liquid hydrogen in space cannot be represented through experiments using other alternative cryogenic fluids. Instead

liquid hydrogen should be treated with special regard

which is different from liquid oxygen and liquid methane. In space-based test designs for liquid oxygen and liquid methane

liquid nitrogen can be used as a substitute in a convenient and safe view. However

for liquid hydrogen tests

hydrogen itself should be adopted. In addition

microgravity tests based on spacecraft platforms play an irreplaceable role in the upgrading of CFM techniques. In addition to the research on single CFM techniques

spacecraft-based test platforms should be designed in a timely manner.