The　dynamic　behaviour　of　droplets　impacting　solid　surfaces　exists　in　nature,　production,　and　life.　In　this　paper,　for　the　first　time,　the　molecular　dynamics　method　is　used　to　simulate　capturing　the　behaviour　of　nanodroplets　containing　SiO2　on　solid　surfaces.　The　dynamic　behaviour　of　nanodroplets　impacting　solid　surfaces　is　analysed　when　the　initial　falling　velocity　v(0)　of　the　droplet　is　0.3-1.5　nm.ps(-1)　and　for　different　particle　size　d(s),　mass　fraction　fs　of　SiO2,　and　solid　surfaces　with　various　wettability.　The　contact　angles　of　droplets　containing　SiO2　nanoparticles　on　the　solid　surface　were　measured,　and　the　simulated　values　closely　matched　experimental　results.　The　results　show　that　the　droplets　on　the　smooth　solid　surface　are　completely　captured　after　impact　when　v(0)　=　0.3-1.1　nm.ps(-1).　When　v(0)　=　1.2-1.5　nm.ps(-1),　the　droplet　is　fragmented,　and　the　fragmentation　ratio　ns　increases　with　the　mass　fraction　phi(s).　The　droplet　fragments　when　v(0)　=　1.4-1.5　nm.ps(-1)　on　the　rough　solid　surface　when　the　ratio　of　the　side　length　of　the　square　column　to　the　droplet　diameter　is　0.07,　while　the　pure　water　droplet　directly　bounces　and　does　not　fragment.　There　is　a　linear　relationship　between　the　minimum　height　of　the　centre　of　mass　and　the　mass　fraction　in　the　process　of　droplet　impact.　The　maximum　droplet＇s　spreading　factor　value　in　the　spreading　stage　beta(max)　increases　with　mass　fraction　phi(s)　and　v(0).　When　the　spreading　factor　of　droplets　increases　to　beta(c)　approximate　to　3.02,　the　droplet　fragments.　The　droplet　spreading　presents　the　Wenzel　state　on　the　rough　solid　surface.　Moreover,　the　pinning　effect　affects　the　droplet　falling　into　the　square　column　gap　surface,　hindering　droplet　spreading.　Therefore,　the　rough　surface　has　better　catching　ability　for　the　droplet　than　the　smooth　surface,　while　the　speed　range　that　can　be　caught　is　larger.　These　results　provide　a　theoretical　basis　for　related　engineering　applications.