This Phase adopts an open-label design, with an Accelerated Titration(AT) design for the low-dose group (50 mg Bid) and the standard "3+3" design for the high-dose groups（100 mg Bid、50 mg Qd、100 mg Qd、200 mg Qd）.

After the completion of the dose escalation study, RP2D will be selected for dose expansion in advanced solid tumors (such as non-small cell lung cancer, colorectal cancer, pancreatic cancer, etc.) with KRAS mutations that have failed at least the first-line standard treatment

ZG2001 will be administered orally once or twice daily in a continuous regimen

A DLT is defined as any Grade ≥ 3 AE meeting the criteria listed below occurring during the 1st treatment cycle of ZG2001 (Day 1 through Day 21) where the relationship to ZG2001 cannot be ruled out.

Incidence of Treatment-Emergent Adverse Events as assessed by CTCAE v5.0