We studied a Galactic Hii region Sh2-305 to understand the star/star-cluster formation using our deep optical and near-infrared photometry along with multiwavelenth archival data. We identified ∼116 young stellar objects (YSOs) in the ∼ 19′ × 19′ region of Sh2-305 based on their excess infra-red emission. Out of
them 87% (96) are Class ii and 13 % (20) are Class i sources. The average age, mass and extinction (AV ) for this sample of YSOs are 1.8 Myr, 2.9 M⊙ and 7.1 mag, respectively. The density distribution of stellar sources along with MST analyses on the location of YSOs have been used to study structure of this region
and we found three stellar clustering in this region, i.e. one in the central region (Mayer 3, CC) and other two in north (NC) and south (SC) direction of Sh2-305 region. Gaia DR2 proper motion data is used to identified 137 members of Sh2-305 region and subsequently the distance is calculated as 3.7 kpc. The slope of K-band luminosity function, value of star formation efficiency, mean age of YSOs, fraction of Class ii sources, dense cloud mass, all of these parameter are indicating that, out of the three identified stellar clustering in the Sh2-305 region, the CC is oldest one where massive stars have already dispersed the nearby molecular material, whereas the other two which are located towards the south and north of CC are younger. SC is the youngest one harboring massive YSOs still embedded in molecular cloud.