  We present the multi-point and multi-wavelength observation and analysis on a
solar coronal jet and coronal mass ejection (CME) event in this paper.
Employing the GCS model, we obtained the real (three-dimensional) heliocentric
distance and direction of the CME and found it propagate in a high speed over
1000 km/s . The jet erupted before and shared the same source region with the
CME. The temporal and spacial relation- ship between them guide us the
possibility that the jet triggered the CME and became its core. This scenario
could promisingly enrich our understanding on the triggering mechanism of
coronal mass ejections and their relations with coronal large-scale jets. On
the other hand, the magnetic field configuration of the source region observed
by the SDO/HMI instrument and the off- limb inverse Y-shaped configuration
observed by SDO/AIA 171 A passband, together provide the first detailed
observation on the three-dimensional reconnection process of large-scale jets
as simulated in Pariat et al. 2009. The erupting process of the jet highlights
that filament-like materials are important during the eruption not only of
small-scale X-ray jets (Sterling et al. 2015) but also probably of large-scale
EUV jets. Based on our observation and analysis, we propose a most possible
mechanism for the whole event with a blob structure overlaying the
three-dimensional structure of the jet to describe the interaction between the
jet and the CME.
