The MEMS and nanotechnology system-level design tools applied to multiple fields and scales are epoch-making products for effective comprehensive design of devices and circuits. Combined with other IntelliSuite modules, many technical challenges in industry can be solved. ◆ A good extensibility framework, which can easily add new units; ◆ Flexible unit definition method, no need to learn a new language; ◆ No need to spend a lot of time to calculate the Jacobian determinant, and the calculation speed is significantly better than the traditional numerical method; ◆ Pre-built cell libraries containing analog, digital, hybrid digital-analog, mechanical, and MEMS components. and is constantly being updated; ◆ The mEFM (Multiple Surface Meshing) algorithm specially developed for inertial devices such as MEMS gyroscopes and accelerometers can efficiently and accurately analyze the characteristic parameters of complex comb structures, greatly improving computing efficiency; ◆ Based on the Jiles-Atherton model and the quadratic domain rotation model, considering the hysteresis effect of the changing magnetic field, a MEMS unit with magneto-mechanical coupling and magneto-piezoelectric coupling is developed;