  The hyperon-nucleon ($Y$-$N$) interaction is important for the description of
the equation-of-state of high baryon density matter. Hypernuclei, the cluster
object of nucleons and hyperons, serve as cornerstones of a full understanding
of the $Y$-$N$ interaction. Recent measurements of the lightest known
hypernucleus, the hypertriton's ($\mathrm{^3_{\Lambda}H}$) and
anti-hypertriton's ($\mathrm{^3_{\bar{\Lambda}}\bar{H}}$) lifetime, mass and
$\Lambda$ separation energy have attracted interests on the subject. Its cross
section and collective flow parameters have also been measured in heavy-ion
collisions, which have revealed new features on its production mechanism. In
this article we summarise recent measurements of $\mathrm{^3_{\Lambda}H}$,
focusing on the heavy-ion collisions. We will discuss their implications for
the $\mathrm{^3_{\Lambda}H}$ properties and the constrains on the $Y$-$N$
interaction models.
