Background The development of child psychiatry in China is slow and very limited resources have been allocated to it. To investigate the current resources of inpatient psychiatric facilities for youth in top-tier psychiatric hospitals in China and the characteristics of youth patients hospitalized in an adult unit. Method As part of a official national survey, 29 most representative provincial tertiary psychiatric hospitals in China were selected. Data of 1975 inpatients discharged from these hospitals from March 19 to 31, 2019 were retrieved and analyzed. Results The mean number of youth psychiatric bed was 27.7±22.9 in these hospitals and 6/29 hospitals had zero youth beds. There were significantly more youth beds in developed regions than in less developed regions (P<0.05). Most of discharged youth patients were teenagers with severe mental illnesses, including schizophrenia, depressive disorder and bipolar disorder. 7.5% (149) of 1975 discharged patients were youth while youth beds only accounted for 3.2% (804/25136) of all psychiatric beds. 45.6% (68) of youth patients hospitalized in adult units. Conclusion Our findings highlight a dire situation of youth inpatient service in China, especially in less developed regions. There is an urgent need to change the policy and develop mental health services, including inpatient services for child and adolescent patients.