  Tidal disruption events (TDEs), characterized by their luminous transients
and high-velocity outflows, have emerged as plausible sources of high-energy
neutrinos contributing to the diffuse neutrino. In this study, we calculate the
contribution of TDEs to the diffuse neutrino by employing the outflow-cloud
model within the TDE framework. Our analysis indicates that the contribution of
TDEs becomes negligible when the redshift $Z$ exceeds 2. Employing a set of
fiducial values, which includes outflow energy $E_{\rm kin}=10^{51}$ erg, a
proton spectrum cutoff energy $E_{\rm p,max}=100$ PeV, a volume TDE rate
$\dot{N}=8 \times 10^{-7}\ \rm Mpc^{-3}\ year^{-1}$, covering fraction of
clouds $C_V=0.1$, energy conversion efficiency in the shock $\eta =0.1$, and a
proton spectrum index $\Gamma=-1.7$, we find that TDEs can account for
approximately 80\% of the contribution at energies around 0.3 PeV.
Additionally, TDEs still contribute around 18\% to the IceCube data below 0.1
PeV and the total contribution is $\sim 24^{+2}_{-15}\%$. In addition, we also
discuss the potential influence of various parameter values on the results in
detail. With the IceCube data, we impose constraints on the combination of the
physical parameters, i.e., $C_{f}=\dot{N}E_{\rm kin}C_{\rm v}\eta$. Future
observations or theoretical considerations would fix some physical parameters,
which will help to constrain some individual parameters of TDEs.
