Majorana quantum computation offers a potential approach to securely manipulating and storing quantum data in a topological manner that may effectively resist the decoherence induced by local noise.However,actual Majorana qubit setups are susceptible to noise.In this study,from a quantum dynamics perspective,we develop a noise model for Majo-rana qubits that accounts for quasi-particle poisoning and Majorana overlapping with fluctuation.Furthermore,we focus on Majorana parity readout methodologies,specifically those leveraging an ancillary quantum dot,and carry out an in-depth exploration of continuous measurement techniques founded on the quantum jump model of a quantum point contact.Utilizing these methodologies,we proceed to analyze the influence of noise on the afore-mentioned noise model,employ-ing numerical computation to evaluate the power spectrum and frequency curve.In the culmination of our study,we put forward a strategy to benchmark the presence and detailed properties of noise in Majorana qubits.